Dennis Franks/President/732.960.2621/dfranks@isgs.us/TX PSB License # C15409


Carl Wake served over twenty-one years as a Special Agent of the FBI.  During this time, Mr. Wake completed numerous complex fraud investigations including copyright fraud, theft of trade secrets, internet fraud and a wide variety of financial crimes.  While assigned to FBI headquarters, Counterintelligence Division, Mr. Wake completed an 18-month joint duty assignment with the Department of Defense, Defense Threat Reduction Agency (DTRA).  In this capacity, Mr. Wake provided FBI counterintelligence support for all US arms control treaties.  While posted at the FBI’s Baghdad Operations Center, Mr. Wake was assigned as the FBI liaison to the Iraqi Police Major Crimes Unit and to the US Embassy Hostage Working Group.  In this capacity, Mr. Wake was credited with securing the release of a kidnapped US journalist and earned the FBI combat theater award.

While assigned to the Houston Field Office, Mr. Wake led an Evidence Response Team.  He helped collect evidence at hundreds of domestic and foreign crime scenes to include the World Trade Center following the 911 attack and in East Texas following the loss of the Space Shuttle Columbia.  He was an adjunct faculty member for the FBI forensic science program and was frequently selected to teach all aspects of forensic science to police departments and military units throughout Europe, Asia and Africa.  Mr. Wake’s primary forensic emphasis was crime scene photography and videography for which he received numerous awards.  Mr. Wake finished his career working as a photographer on a Special Operations Group which conducted physical surveillance on challenging targets.

Mr. Wake is a licensed private investigator in the State of Texas.

Douglas Drilling served over 28 years as a Special Agent of the FBI.  Mr. Drilling was an accomplished and highly respected criminal investigator responsible for successfully bringing to resolution numerous complex and high-profile white-collar crime investigations.  In his role as a case agent, Mr. Drilling oversaw multiple savings & loan failure cases having losses in the hundreds of millions of dollars. Mr. Drilling was instrumental in dismantling a number of criminal enterprises involved in major governmental and private insurance and health care fraud.  His work with numerous other government and law enforcement agencies culminated in a large number of criminal convictions, recoveries and forfeitures.  


Curtis Scales is a retired Houston Police Officer with 22 years of law enforcement experience - the majority assigned as a Homicide Investigator working murders and kidnappings.

Mr. Scales also worked undercover in the HPD Narcotics Division and was deputized as a DEA agent for a case involving multi-state trafficking organization. Mr. Scales was also assigned as a Homicide investigator to a special gang unit and was deputized as a special FBI investigator for Operation Safe Streets. He was also a crime scene investigator and a street level anti-gang officer.

Mr. Scales has extensive expertise in use of force cases and has testified numerous times. Mr. Scales received over 50 awards and commendations as an HPD Investigator and received special training in kidnappings from Scotland Yard.

Mr. Scales is a licensed private Investigator and maintains a Texas Law Enforcement License.

Mr. Jan Zawitkowski was a 32-year veteran of the Federal Bureau of Investigation (FBI).   While serving in the FBI’s Offices in New York, Washington and Houston, he investigated and managed complex cases within top priority investigative programs of the FBI, to include counter-terrorism, foreign counter-intelligence, cyber, organized crime, and drug trafficking.   Mr. Zawitkowski received numerous awards and commendations for his role in these investigations from a number of the Directors of the FBI, heads of various FBI offices and other Federal agencies. Mr. Zawitkowski was a member of FBI’s Joint Terrorism Task Force (JTTF).




In these capacities, Mr. Franks was involved in numerous counter-terrorism, counter-intelligence and criminal program investigations. 

In addition to his management experience, Mr. Franks served as an investigator and case agent of several complex cases that utilized sophisticated investigative techniques and undercover operations. Both as a case agent and Supervisory Special Agent, Mr. Franks successfully helped dismantle operations of numerous Colombian and Mexican Drug Cartels, as well as Asian and Russian Criminal Enterprises.  For his exemplary efforts he received over twenty commendations.  ​

Robert (Bobby) Martin served as a Special Agent of the FBI for over 30 years. Mr. Martin served the FBI offices in Tulsa, Miami, Little Rock, and Houston.

While Mr. Martin worked in virtually every area of FBI investigative concern, he developed investigative specialties in the areas of International Drug Trafficking, Public Corruption, Corporate Fraud, International and Domestic Terrorism and National Security Matters. Mr. Martin was involved in many noteworthy criminal prosecutions during his tenure. In each of these instances, Grand Jury and trial testimony in Federal Court was required and Mr. Martin was repeatedly recognized for his courtroom acumen.

Mr. Zawitkowski was selected as the FBI’s Coordinator for the Protection of Foreign Officials and Official Guests of the United States.  Due to his bi-lingual proficiency and investigative experience, Mr. Zawitkowski participated extensively in the FBI’s International Training Initiatives, both at the FBI Academy at Quantico, and in Eastern Europe.

Mr. Zawitkowski obtained training in the area of Dignitary Protection by the United States Secret Service and the United States Department of State.  He was selected to be in charge of a security detail for FBI Director Louis Freeh, and for many other dignitaries who accompanied the Director, during the Director’s travel to Poland.   Mr. Zawitkowski coordinated all aspects of the security detail with appropriate officials from FBI Headquarters, the U.S. Embassy in Warsaw, and Polish security counterparts. 

Mr. Zawitkowski obtained certification as a FBI Undercover Agent and has worked on several, very successful, high-profile undercover cases within the United States, Europe, Asia and South America. 

Mr. Zawitkowski was a member of the FBI’s Washington Field and Houston Office SWAT teams, where he served as an assaulter and a sniper.   Mr. Zawitkowski also obtained FBI’s certification as a firearms instructor.

Prior joining the FBI, Mr. Zawitkowski worked as a Quality Inspector for the General Motors Company in Rochester, New York.  Mr. Zawitkowski obtained a Bachelor of Science in Mass Communication, with a minor in East European studies, from Buffalo State University, Buffalo, New York.

Mr. Zawitkowski is a licensed private investigator,  security consultant, security officer and personal protection officer in the State of Texas. Mr. Zawitkowski is also licensed by the Federal Air Marshall Service as an Armed Security Officer (ASO) for corporate clients.

George Paruch has a combined 40 years of facility security and law enforcement experience. In the last 15 years Mr. Paruch, as a Regional Security Manager and Facility Security Manager, assisted in managing the Valero’s Global Security Operations at the Houston and Texas City refineries. Mr. Paruch has extensive experience developing and implementing Maritime Transportation Security Act (MTSA)  Facility Security Plans, Risk Assessments and Security Audits, Home Land Security Grant Programs and Transportation Workers Identification Credentials (TWIC)  compliance. He has worked in partnership with various federal, state and local law enforcement agencies which, include the FBI, U.S. Coast Guard, Houston Police Department and the Joint Terrorism Task Force

Obtaining these results required Mr. Drilling to interview thousands of victims, witnesses and subjects.  For his exemplary efforts, Mr. Drilling was honored with numerous awards and accommodations from within the Department of Justice as well as from outside government agencies and private sector organizations.

In addition to his having an extensive white-collar crime background, Mr. Drilling worked violent crime, international drug trafficking, organized crime, domestic and international terrorism, counter-intelligence, money laundering, public corruption and national security matters.  Mr. Drilling was one of the initial members of the FBI’s Evidence Response Team (ERT), resulting in him obtaining extensive training and experience in the collection and preservation of crucial evidence.  As an FBI Special Operations Group (SOG) team leader for over 14 years, Mr. Drilling led and coordinated hundreds of SOG covert surveillance operations concerning a vast array of intense, diverse and challenging scenarios.

Prior to joining the FBI, Mr. Drilling worked as a manufacturing accountant and a cost accountant/senior financial analyst for six years.  Mr. Drilling has a Bachelor of Science degree in Accounting from the University of Evansville.

Mr. Drilling is a licensed private investigator in the State of Texas.

Mr. Eldredge received a BBA degree from the University of Texas at Austin and he undertook additional accounting studies at the University of Maryland and the University of Virginia.

Mr. Eldredge is a licensed private investigator in the State of Texas.

James Hawkins is a retired FBI Agent with 29 years of experience investigating white collar crimes in Houston, Texas.  Mr. Hawkins has worked all types of financial crimes in his career including bank frauds, bank failures, corporate frauds, insurance frauds, corporate embezzlement, business email compromise and Ponzi schemes.  

Mr. Hawkins has received numerous commendations for his work from the FBI and from the United States Attorney's Office in Houston.  One of Mr. Hawkins' last cases at the FBI was recently featured in an article in Sports Illustrated and the TV show American Greed.  Mr. Hawkins received a Business degree from the University of Texas at Austin and a Law degree from Southern Methodist University.  

Mr. Hawkins is a licensed Private Investigator in the State of Texas.


Mr. Franks was also a member of the FBI’s Special Weapons and Tactics team and firearms instructor for eight years. He was an international police instructor regarding criminal enterprises at the International Law Enforcement Academy, Bangkok, Thailand and at the Middle East Law Enforcement Academy, Dubai, United Arab Emirates; as well as in Bucharest, Romania regarding crisis management in the context of weapons of mass destruction in conjunction with the U.S. Department of Defense.

Mr. Franks has a bachelor’s degree in Political Science from North Carolina State University and a Juris Doctor degree from Campbell University School of Law. Prior to his career in the FBI, Mr. Franks was a licensed attorney and a state prosecutor in North Carolina.

Mr. Franks is a licensed private investigator, security consultant and personal protection officer in the State of Texas.

Charles Goslin is a retired CIA operations officer and veteran of U.S. Army Intelligence, with over 35 years’ experience in security and risk, intelligence operations, and international business.  He is expert in human intelligence collection (HUMINT), counterintelligence, counterterrorism, transnational organized crime and counter narcotics operations.  He also has unique expertise in technical information operations.  He worked and lived abroad in Southwest Asia, Africa, Central and South America, the Middle East and Europe. 




Mr. Goslin teamed with law enforcement and intelligence partners in multiple countries on operations, and training. He served as a senior investigator with Joint Terrorism Task Forces in the U.S., flexibly collaborating with local, state, and federal law enforcement agencies.   He was also detailed to U.S. State Department Office of Inspector General for Security & Intelligence oversight inspections of major U.S. facilities and activities in Europe, Central & South America.  

Mr. Goslin continues actively consulting in retirement on matters of intelligence and geopolitical risk, security, and threat.  He also has unique and extensive business operations experience, expertise and networks located in emerging markets in Africa and the Middle East.  Mr. Goslin recently published a book "Understanding Personal Security and Risk: A Guide for Business Travelers (CRC Press 2017),” and he is actively sought as a lecturer on security and terrorism issues by universities, industry organizations, and as a source for media in television and print. 

Mr. Goslin is a licensed security consultant in the State of Texas.


Dennis Franks, an attorney and a 22-year veteran of the Federal Bureau of Investigation (FBI), has worked in the private investigation and security consulting field since his retirement from the FBI as a Supervisory Special Agent.

Mr. Franks served in various capacities during his FBI career.  His last assignment was as Supervisory Special Agent of the Houston Division’s Special Operations Group. Mr. Franks also supervised several investigative squads during his career, to include criminal enterprise/organized crime squads, a multi-agency drug trafficking task force and a multi-agency intelligence group. He held collateral assignments as Assistant Crisis Management Coordinator, Assistant Legal Advisor, Undercover Program Coordinator and Assistant SWAT Team leader.


Counted also among his many postings, Mr. Lynn served as the FBI's Legal Attache' at the US Embassy in Canada, and at FBIHQ as the Chief of the FBI Public Access Center, the Bureau's 24/7 Internet Terrorism Tip Portal. While posted in Ottawa on 9/11/2001, he was designated as the US Law Enforcement and Intelligence Community representative in the Canadian National Incident Command Center, Royal Canadian Mounted Police Headquarters.


​​Keith Medford retired from the FBI after 22 years of service in the Little Rock, Los Angeles, Houston and Headquarters Divisions. 

Mr. Medford investigated numerous complex securities, wire and bank fraud cases, along with civil rights matters. He was recognized by the FBI, the U.S. Attorney’s Office, and the Securities and Exchange Commission for his outstanding efforts involving complex securities fraud matters.

In addition to his financial investigations background, Mr. Medford was assigned to the FBI’s Special Operations Group where he was involved in numerous high profile sensitive operations.  Mr. Medford was the Houston Division InfraGard coordinator where he planned and executed several multi-day and multi-track conferences involving numerous law enforcement agencies, vendors, and participants. The chapter increased three fold during his tenure.

Mr. Medford worked Cyber Crime matters involving crimes against children and was certified as an online undercover agent.  For several years, he worked in the Greater Houston Regional Computer Forensic Laboratory as a digital forensic examiner certified in Windows. Linux, and video examinations.

During his time at FBI Headquarters Mr. Medford was a Program Manager for the FBI’s InfraGard program where he oversaw chapters for 15 FBI Field Divisions.  Mr. Medford was also the project manager responsible for a major upgrade of the InfraGard website which required working and coordinating with numerous FBI stakeholders and outside contractors.

Mr. Medford has testified in Federal Court as an expert witness.

After retiring from the FBI, Mr. Medford worked in the area of Cyber Security for First Data Corporation.

Mr. Medford obtained a bachelor degree from Harding University and a MBA from Texas Tech University.  Prior to entering on duty with the FBI, Mr. Medford was a Vice President in the Capital Markets Division at BankOne.

Mr. Medford is licensed as a private investigator in the State of Texas.


Bill Lynn retired from the FBI after 28 years of service, attaining the rank of Assistant Special Agent in Charge. He served in the FBI's New York Office as the Chief of the Special and Technical Operations Branches where he directed the operational activity of more than 400 Special Agents, Technicians, Analysts and Specialists who served all FBI investigative and intelligence programs. As the Chief of the FBI's New York Office's Technical Operations Branch he was the FBI's most senior Technically Trained Agent responsible for managing the FBI's largest, most sophisticated and important technical enterprises.



​​​​Recently, Mr. Martin was chosen to provide summary/expert testimony in the trials of Enron Executives Jeff Skilling and Ken Lay, and then again in the FBI’s investigation of Allen Stanford and his subordinates. Stanford constructed the second largest Ponzi scheme in history, with losses totaling over eight billion dollars.

For his work in such high-profile prosecutions, Mr. Martin received numerous awards and commendations from the FBI, the United States Attorney’s Office, the Department of Justice, local law enforcement agencies and private sector organizations. Mr. Martin also received the Attorney General’s Exceptional Service Award in a ceremony at the Department of Justice in Washington DC in 2012.

Mr. Martin served on FBI Special Weapons and Tactics (SWAT) teams for over 15 years and was an FBI certified sniper for nine years. Mr. Martin was also trained and served as a Hostage Negotiator within the Crisis Management Group. Mr. Martin served as a Team Leader for a Special Operations Group which involved the coordination and leadership of covert surveillance operations on counter-terrorism, counter-intelligence and criminal matters. During Mr. Martin’s career, his duties have taken him to every corner of the United States as well as England, Australia, Colombia and Argentina.

Prior to joining the FBI, Mr. Martin worked as a lending officer for Allied Bank of Texas in Houston, Texas. Mr. Martin has a Bachelor of Business Administration-Accounting from The University of Texas at Austin.

Mr. Martin is licensed as a private investigator, security officer and personal protection officer in the State of Texas. He is located primarily in Austin, Texas.

​​Leonard Carroll served over 25 years as a Special Agent of the FBI.

Mr. Carroll served in numerous field offices of the FBI and in various capacities during his FBI career.  Mr. Carroll was integrally involved in the successful investigations of dozens of cases in areas including complex white-collar crime, public corruption, international drug trafficking, counter-intelligence and counter-terrorism matters. 

Mr. Carroll has been recognized as one of the FBI’s most experienced undercover agents, participating in 28 cases in an undercover capacity. Many of these cases were high-profile investigations of corrupt government officials and politicians, as well as sensitive criminal enterprise and national security matters that were international in scope.  In these investigations, Mr. Carroll infiltrated Colombian cartels, the Russian Mafia, the Italian Mafia and corrupt politicians.

Mr. Carroll’s expertise was also recognized as an instructor of undercover techniques.  Mr. Carroll taught undercover techniques at the FBI Academy at Quantico for 22 years and in Hereford, England for British Intelligence.

In addition to being a certified instructor, Mr. Carroll was also a certified Hostage Negotiator with the FBI.

Subsequent to his retirement from the FBI, Mr. Carroll has worked as an instructor and consultant relating to interviewing and interrogation techniques, as well as undercover operations. Mr. Carroll has also worked for British Intelligence in MI-5 as a covert operative.

Prior to joining the FBI, Mr. Carroll served in the U.S. Navy as a Russian language interpreter. Mr. Carroll has a Bachelor of Science degree in Accounting from the University of South Carolina.  

Mr. Carroll is a licensed private investigator in the State of Texas.

Since his retirement, Mr. Lynn served more than 42 months in Afghanistan, embedded  as a US Army Law Enforcement Advisor with the US Army during Operation Enduring Freedom. Most recently he served a 24 month tour as the Commanding General's Senior Law Enforcement Advisor - NATO International Joint Command, Kabul Afghanistan.

Mr. Lynn is an organized crime, counter-terrorism and counter-insurgency expert and is highly regarded for his specific expertise in Afghan culture, government and law.  Mr. Lynn holds a Master's Degree in Public Administration from the Maxwell School at Syracuse University.

Mr. Lynn is a licensed private investigator and security consultant in the State of Texas.


Frank Eldredge served over 31 years as a Special Agent of the FBI, with a specialty in accounting.  Mr. Eldredge was an accomplished investigator of white-collar crimes, counter-terrorism matters and other investigative areas to which he was assigned.  His experience includes 21 years investigating various white-collar crimes,  including anti-trust violations, government fraud and public corruption. Mr. Eldredge engaged in counter-terrorism, drug trafficking and violent crime investigations for approximately 10 years.

Included among his many recognized accomplishments were successful cases involving nation-wide public corruption, nation-wide anti-trust bid-rigging and price-fixing, telemarketing scams, bribery, fraud, gang, and terrorism. For these accomplishments, Mr. Eldredge received 18 awards and commendations.

Mr. Eldredge was assigned for several years to the FBI’s Special Operations Group, where he was also very successful in various sensitive investigations and operations.

Mr. Paruch was formerly a member of the Houston Ship Channel Security Board of Directors, Houston Crime Stoppers Board of Directors and the Texas City Security Council Board of Directors

Mr. Paruch served as deputy with the Dallas Sheriff’s Office as a warrant officer and background investigator. He then joined the Richmond Texas Police Department where he rose up through the ranks and retired as Police Captain. He was instrumental in successfully implementing Community Policing resulting in an International Association Chief of Police Award. Mr. Paruch has published articles on Community Policing in the Texas Police Journal, and Law and Order.

Mr. Paruch is a recipient of 100 Club of Houston scholarship from Sam Houston University with a Master’s Degree in Criminal Justice Management. He is also an FBI National Academy graduate and holds Certified Protection Professional (CPP) designation.

Mr. Paruch is a licensed private investigator and security consultant in the State of Texas.

John Lynn is a former Captain in the US Air Force (USAF) and a combat veteran with three tours of duty under Operations Enduring Freedom and Iraqi Freedom.  He is a career investigator as a former Special Agent with the USAF Office of Special Investigations (OSI).  He has led investigations and security operations around the globe in a myriad of capacities.  He culminated his service as an OSI Special Agent as the Major Crimes Division Chief at Wright-Patterson Air Force Base, Dayton, Ohio where he led a skilled team of Special Agents in felony investigations utilizing the latest in tradecraft, technology, and professional techniques.

During his OSI service, Mr. Lynn was also selected to specialize in Executive Protection matters.  Following Executive Protection training he was deployed to Afghanistan where he formed and led a specialized team as the top Close-Protection Agent in Charge. His executive principles included Flag Officers, Heads of State, and other high ranking government officials.  He was responsible for threat analysis, tactical movements, and security of the USAF command team in Afghanistan.  He planned, organized and led over 800 outside-the-wire combat missions without incident or casualty.  Furthermore, he developed a campaign-wide Standard Operating Procedure (SOP) for executive movements through controlled checkpoints.

Mr. Lynn is highly trained and experienced in conducting and leading investigations, interviews and interrogations, and executive protection.  He is a graduate of Boston University where he earned a Bachelor’s of Science in Psychology and where he was commissioned as a USAF Officer through the USAF ROTC program.  He also earned a Master’s of Criminal Justice degree from American Military University.   He holds a host of specialized training certificates from the USAF Air University, the Federal Law Enforcement Training Academy and other associated law enforcement entities.

Mr. Lynn is a licensed private investigator in the State of Texas.