Private Investigators Expert Witnesses
Forensic & Laboratory Testing Expert Witness Listings
Private investigators (PIs) may be found by clicking on the below listed links. The private detectives found through this page may advise regarding due diligence, background investigations, and private investigations. These investigators may provide reports concerning background checks, criminal investigations, and domestic investigations. They may also provide testimony regarding information services, investigations, location services, surveillance, witness interviewing and assessment, witness location and statements, sub rosa, subrosa, private eyes, and skip traces, among other topics.
Mr. Stephenson is a former FBI Agent, FBI Police Instructor, FBI SWAT Instructor and FBI National Academy Instructor. Mr. Stephenson has over 25 years experience in contract security guard operations and private investigations. He has testified and...
Locations: Multiple Locations
Areas of Expertise: Dr. Williams is an Associate Member of the American Bar Association and serves on the ABA Criminal Justice Committee. He is a Certified Forensic Consultant with the American College of Forensic Examiners and a retired chief of USDOJ organized crime...Location: New York
Areas of Expertise: Vincent A. Ettari, P.E., P.C. serves New York City & the counties of Westchester, Dutchess, Putnam, Orange, Rockland, Ulster, Suffolk (Long Island), Nassau, Bronx (N.Y.), Queens, Brooklyn / Kings County, Manhattan / NY and Staten Island /...Location: Texas
Areas of Expertise: AUTO FIRE & SAFETY CONSULTANTS, INC., (FORMERLY CAM COPE CONSULTING), provides investigative and expert witness services throughout the U.S. and Mexico. Our team of professionals has a wide range of expertise in the evaluation and investigation...Location: Massachusetts
Areas of Expertise: Howard began his security career in 1979 and has accumulated a diverse and impressive background as he has become one of the nations best known security experts. He is based in Massachusetts but available nationally. He has appeared as a Security...Locations: Multiple Locations
Areas of Expertise: Police Practices & Procedures, Premises Security Expert Don is a trained and experienced police and security professional with more than 34 years of experience. His comprehensive expertise comes from his work in all areas of the security field: as a...Location: California
Areas of Expertise: Professional investigations with emphasis on accuracy, detail and expedience. Asset/financial searches. Background/due diligence investigations. Database/DMV searches. Surveillance/video/photography. Witness location/statements. Process Service....Location: Missouri
Areas of Expertise: Michael Lyman is the author of five nationally recognized books on police procedure and thirty-three years experience as a senior criminal investigator; a certified police trainer and criminal justice educator. Specializing in the area of police...Location: New York
Areas of Expertise: Mr. Grahme Fischer has over 40 years of experience practicing various aspects of mechanical and forensic engineering. He has conducted and/or supervised many hundreds of accident investigations involving automobiles, trucks, motorcycles, bicycles,...Location: Pennsylvania
Areas of Expertise: Mr. Dallas' experience covers more than 30 years of extensive security management consulting services. He has designed security defensive strategies in all environments; analyzed potential threats and created programs in risk assessment,...Location: Texas
Areas of Expertise: Established in 1981, SEAL specializes in providing multi-disciplined engineering and scientific consulting, product testing, safety and forensic engineering (failure analysis) services to manufacturers and their corporate counsel, defense and...Location: California
Areas of Expertise: Stewart Forensic Consultants, LLC is an independent consulting firm providing investigation, forensic and litigation support to individuals, companies and firms. Our technical staff is headed by Larry Stewart who has over 29 years of experience with...Location: California
Areas of Expertise: It's not just about products; it's process that counts. Prudence begins before the first dollar gets invested; awareness and understanding is essential; due diligence, care and monitoring does not end simply because one signed an account agreement....Location: California
Areas of Expertise: Setec Investigations offers unparalleled expertise in computer forensics and electronic discovery, providing highly personalized, case-specific forensic analysis and litigation support services to assist in the investigation, handling, and...Location: Nevada
Areas of Expertise: Mr. Nicholson is President of The Toiyabe Group, Inc., and has over twenty-five years of healthcare finance experience. He specializes in regulatory compliance programs; fraud audits; risk assessments; billing/compliance reviews; Charge Description...Location: Georgia
Areas of Expertise: Mr. Blackstone is a board-certified polygraph examiner and expert witness regarding the proper use of polygraph in civil, clinical and criminal testing settings regarding allegations of rape, child molestation, child abuse, and child homicide (shaken...Location: California
Areas of Expertise: Representing agency defense and concerned plaintiff clients since 1991. Referred to by attorney clients as "the expert's expert." A 90% case WIN ratio with over $97 Million saved defending agencies and over $12 Million recovered for plaintiff's since...Location: California
Areas of Expertise: Mr. Nicholson is President of The Toiyabe Group, Inc., and has over twenty-five years of healthcare finance experience. He specializes in regulatory compliance programs; fraud audits; risk assessments; billing/compliance reviews; Charge Description...Location: New York
Areas of Expertise: FORENSIC ENGINEERING: Forensic traffic review is an area of expertise at Schneider Engineering, PLLC. Our engineers are recognized by leading law firms as traffic safety experts. We have been involved in high profile cases, where our expert review...Locations: Multiple Locations
Areas of Expertise: Brooks Rugemer Commercial Trucking Specialist With nearly 15 years experience, Brooks understands all aspects of the commercial trucking industry. He has been involved with trucking, warehousing, and logistics and in a wide array of management...Location: Arizona
Areas of Expertise: Dr. Eckstat provides consulting, expert witness and forensic investigation services in the scope of Consumer and Industrial Products ranging from appliances to watercraft, including firearms. He is a certified fire and explosion investigator. Dr....Location: California
Areas of Expertise: Dr. Frank Hsu is a licensed Professional Engineer in the State of California and a nationally recognized Certified Fire and Explosion Investigator. His areas of specialties include: investigation and analysis of fire, explosion, water loss, product...Location: California
Areas of Expertise: Gregory D. Lee retired as a Supervisory Special Agent for the U.S. Drug Enforcement Administration (DEA) in late 2003, and is a former instructor at the FBI Academy. With over 30 years of recent practical law enforcement experience, he now offers a...Location: Texas
Areas of Expertise: MECHANICAL & ELECTRICAL ENGINEERING Why should you choose us? OUR CREDENTIALS, COMPETENCE, CREDIBILITY, COMMUNICATION FOUR C’S: • Credentials: Ph.D.-level, tenured Mechanical & Electrical engineering professors, • Competence: Internationally...Location: Texas
Areas of Expertise: Specializing in Cyberspace Investigations. With over 35 years experience in the computer technology industry and 12 years as a computer forensic analyst, Mr. Odenthal has worked well in excess of 500 computer forensic cases and has lectured and...Locations: Multiple Locations
Areas of Expertise: "Expert Professional Not Professional Expert" - I am a "Board Certified" security professional with multi-state security consultant, private patrol and private investigator "Qualified Manager" licenses. My background includes more than 39 years of...Locations: Multiple Locations
Areas of Expertise: ForensisGroup, Inc. is a multi-disciplined expert resource group uniquely structured to provide you with high quality experts as expeditiously as possible. It is your ultimate source of experts since 1991! Thousands of our clients have gained the...Location: Oregon
Areas of Expertise: Jacqueline A. Joseph, B.A., CDE. Certified and court-qualified since 1992, Ms. Joseph has conducted handwriting research and published numerous papers in scientific journals pertaining to questioned document examination and handwriting...Location: California
Areas of Expertise: Mr. Kelly is a Forensic Engineering Investigator with over 40 years of hands on experience with Diesel,Gas Turbine and Alternatively fueled engines and ancillary equipment experience. Mr. Kelly has expertise with marine, power generation,...Location: Ohio
Areas of Expertise: Thomas J. Lekan Mr. Lekan is responsible for the Bank Security, hotel and hospitlity industry security,General Premise Liability, Negligent Security,workplace violence prevention and training, and Fraud as a Consultant. Expert Witness in support of...Locations: New Jersey and Pennsylvania
Areas of Expertise: Russell Kolins is a well known, highly respected, award winning Private Detective with qualified expertise in Criminal Defense Investigation and Tavern Security. He has been the Primary Investigator in over 1000 Criminal cases, including clearing two...Location: California
Areas of Expertise: Robert Douglas is a former State Forensic Engineer with offices in Long Beach, Riverside, San Diego, Las Vegas, and El Paso. He has over 35 years experience in the Accident Reconstruction and Traffic/Transportation/Civil Engineering field and has...Location: Texas
Areas of Expertise: ASR Data offers a wide range of business, civil and criminal litigation support services. We have years of experience in every phase of civil and criminal litigation matters and provide our clients with support and service which is unparalleled in...Location: Connecticut
Areas of Expertise: J. Allen Kosowsky,CPA,CVA,CFE,DACFE,PFS is a forensic accountant with emphasis on Business and Intellectual Property Valuation, forensic accounting, economic damages, internal financial and accounting investigations, white collar fraud and criminal...Location: Florida
Areas of Expertise: A former (retired) Police Major of the Fort Lauderdale Police Department, Robert Pusins has over 30 years of progressive law enforcement experience (1974-2004) in an accredited agency with staffing of over 500 sworn police officers. He advanced...Locations: Arizona and California
Areas of Expertise: Robert M. Denny,CSC,CHS, is a consultant to management and the legal profession regarding security measures and practices. His prior experience includes: Branch Manager for a major security provider in Silicon Valley, California; Director of Global...Location: Illinois
Areas of Expertise: KHB CONSULTING SERVICES provides expert witness and consulting services to attorneys for cases involving industrial or household chemicals, paint & coatings, hazardous materials, labels & warnings, aerosols and other products which contain...Locations: Multiple Locations
Areas of Expertise: Lance Watt Bus and Truck Expert Lance’s 45 years of transportation experience involves everything from aircraft to “stock cars” to triple tractor trailer combinations. His expertise includes vehicle and vehicle component testing and evaluation,...Location: New York
Areas of Expertise: Michael G. Kessler is the President/CEO of Kessler International, a world-renowned consulting firm specializing in forensic accounting, computer forensics and corporate investigations. Mr. Kessler is a leading expert in the area of financial fraud....Location: Pennsylvania
Areas of Expertise: Specialist to assist plaintiff and defense attorneys in police, security, and corrections litigation. Board certified and full-time university professor of criminology. Fulbright scholar-Australia. Former police training captain and former...Location: Michigan
Areas of Expertise: Adam Kelly is a Certified Computer examiner through the ISFCE with extensive experience examining computer media for civil, criminal, and family cases including reports and expert testimony. Mr. Kelly has qualified in the preservation, extraction,...Location: New York
Areas of Expertise: Yarmus Engineering, P.C. has been providing Engineering services throughout the tri-state area since 1974. Andrew R. Yarmus, P.E., President of the firm, has worked in various engineering and construction capacities with the firm since 1987,...Location: California
Areas of Expertise: Mr. Thibault specializes in premises liability, foreseeability, standards of practice for private guard services, background investigations and security consulting. He has testified in court or deposition in all the above areas. Mr. Thibault is the...Location: Virginia
Areas of Expertise: Bulk Liquid Terminal Consultant for over 30 years; experience at over 500 aboveground tank terminals in 43 states. Qualified for environmental, safety, health, fire, explosion, variance, loss, and security matters. Clients have included the U.S....Location: California
Areas of Expertise: Bill Flynn has owned and operated Bill Flynn Investigations, a State of California Private Investigation firm, since 1989 and has specialized in criminal and corporate investigations. He has been retained by clients throughout the United States. Bill...Location: Illinois
Areas of Expertise: I.S.A. is a full services investigative agency specializing in surveillance, fraud and criminal investigations and defense. I am certified by the American College of Forensic Examiners Institute and certified in Homeland Security - Level III. I...Location: Illinois
Areas of Expertise: Mr. David Jacobson has over 35 years experience in all facets of Structural, Civil, & Forensic Engineering, and, in addition to providing design and consultation services, has been providing expert services as an opinion witness to attorneys and...Location: Texas
Areas of Expertise: Certified in Financial Forensics – selected by the U.S. Senate as its only investigative accountant for Whitewater. Reviewed documents related to the audit of Swiss banks for holocaust victims’ assets. Accounting Expert Witness since 1994....Location: Michigan
Areas of Expertise: Board certified in security management, Roger Schmedlen has 40 years private sector domestic and foreign security consulting and investigation experience. Round trip out-of-state travel time capped at maximum 3 - 6 hours. Mr. Schmedlen is a real...Location: California
Areas of Expertise: Mr. Cawood is President of Factor One which is a California based corporation specializing in violence risk assessment, threat assessment, behavioral analysis, security consulting, and investigations. He has worked in the area of threat assessment,...Location: Wisconsin
Areas of Expertise: Specializing in Cyberspace Investigations. With over 35 years experience in the computer technology industry and 12 years as a computer forensic analyst, Mr. Odenthal has worked well in excess of 500 computer forensic cases and has lectured and...Location: Texas
Areas of Expertise: I am a forensic document examiner and a certified forensic physician. Altered medical records are my particular interest, but I work in all areas of forged or altered documents, including altered numbers and disguised handwriting. My medical...Location: California
Areas of Expertise: Bill Gale, with more than thirty years of industrial loss prevention and fire protection engineering experience, has been offering international litigation support services since 1991. His areas of expertise include fires, explosions, and loss of...Location: California
Areas of Expertise: Timothy T. Williams, Jr. is a twenty-nine year retired Senior Detective Supervisor from the Los Angeles Police Department retiring from the elite Robbery-Homicide Division. During his tenure with the Los Angeles Police Department, Mr. Williams...Location: California
Areas of Expertise: The McMullen Company, Inc. is a leading consulting firm, headed by James F. McMullen, California State Fire Marshal (retired). We have a comprehensive team of Senior Associates located throughout the nation. Services offered include fire cause/origin...Location: California
Areas of Expertise: Specialized Investigations investigators areas of expertise are: Fraud, Insurance, Workers Compensation, Surveillance, Labor & Employment, Medical, Civil, Criminal, Trial Preparation, Locates & Skiptracing, Asset Searches, Background Checks,...Location: Washington
Areas of Expertise: Nault & Associates provides consulting and expert witness services in matters relating to Police Policy, Management, and Investigations. Law firms representing both plaintiff and defense have retained Mr. Nault and will offer testimonial on the...Location: California
Areas of Expertise: Created a CPA professional corporation specializing in serving the entertainment and media industry on an international basis including forensic accounting, income taxation,economic damage analysis, management consulting, special audits, and expert...Location: Florida
Areas of Expertise: Serving insurance companies and law firms since 1999, A. D. Stokes, LLC, (ADS) is a forensic consulting firm that specializes in accident investigation and accident reconstruction, as well as diagrams, video and photographic demonstrative aids. We...Location: Washington
Areas of Expertise: Jon J. Nordby, Ph.D., D-ABMDI works as an independent consultant in forensic science & forensic medicine with Final Analysis Forensics. He specializes in death investigation, ballistics, trace evidence analysis, bloodstain pattern analysis, crime...Locations: Connecticut and Texas
Areas of Expertise: As an employment law attorney (State of Texas Bar, 1990), human resources consultant (1996-present) and employment practices expert (1999-present), Laurie R. Jones, Esq., SPHR, has received extensive exposure to discrimination complaints and...Location: Texas
Areas of Expertise: As a nationally-recognized expert in special needs transportation for children and adults I specialize in expert witness services for clients who are in litigation that references ADA, Section 504, IDEA, paratransit, transit, driver training, and...Locations: Nevada and Utah
Areas of Expertise: P.E. (civil) with extensive experience in residential, commercial, industrial and public works construction. Over 120 cases as expert witness in 18 states and overseas. Construction Litigation, Construction Accidents, Personal Injury, OSHA, Insurance...Locations: Florida and Michigan
Areas of Expertise: Mr. Peter Burgher has extensive background in IRC Subchapter C, merger, and acquisitions, venture capital and business finance. Mr. Burgher's areas of expertise include Accounting matters, Audit failures, Cost determination, Insurance claims,...Locations: Multiple Locations
Areas of Expertise: DAVID C. COWEN - A.I.A. Construction, Premises Liability Mr. Cowen’s experience as an architect, construction administrator, and forensic investigator has provided him with a diverse professional knowledge that includes elementary and secondary...Location: Pennsylvania
Areas of Expertise: Prepare with an effective defense strategy. Work with an experienced board certified criminal defense investigator. Its not often, however... Every once in a while...............an innocent person is accused of a crime. Every once in a...Location: California
Areas of Expertise: Over sixteen years experience as a consultant, inspector and tester within the automotive industry. More than ten years experience as a forensic automotive consultant for nationally known insurance companies and law firms. Qualified to testify in the...Location: Texas
Areas of Expertise: Legal professionals who require a high degree of excellence and integrity turn to the forensic engineers at Bison to scientifically conduct an investigation relating to a fire or explosion, electrical incident, carbon monoxide incident or an...Location: California
Areas of Expertise: Steve R. Lee is an expert in forensic economics / forensic accounting. He specializes in high-stakes, complex commercial matters including fraud investigation, business regulation, class action defense, transaction advisory services, loan workouts,...Location: Texas
Areas of Expertise: Mr. Wideman is a Certified Forensic Consultant and Certified Medical Investigator who provides criminal case consultation services and expertise in the areas of forensic serology, forensic DNA analysis, bloodstain pattern analysis, crime scene...Location: Nevada
Areas of Expertise: American Safety Associates, Inc. is a nationwide safety consulting firm. We have a full staff of qualified experts in a variety of safety disciplines. These disciplines include: Occupational Safety and Health (OSHA)* Mine Safety and Health (MSHS)...Location: New York
Areas of Expertise: Mr. Ober (CFE and AIFA) is an expert on suitability, due diligence, fraud, fiduciary matters, private placements, selling away, Internal Revenue Code Section 165, and damage calculations. He has provided assistance in over 150 cases, representing...Private Investigators Expert Witnesses by State
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