Forensic Polygraph Services
Rigorous Examinations for Every Phase of Criminal Defense
From pre-trial investigation to post-conviction matters, G.L. Traylor provides court-ready forensic polygraph services to attorneys and law firms throughout Dallas / Fort Worth.
Criminal Defense
Pre-trial polygraph examinations to support defense strategy, evaluate witness credibility, and inform case preparation. Gary has assisted criminal defense attorneys with all aspects of case management and trial preparation — including capital murder, murder, sexual assault, aggravated robbery, aggravated assault, major drug offenses, child abuse, and family violence cases.
- Locating and interviewing both defense and state witnesses
- Gathering facts from defendants, witnesses, and complainants
- Documenting statements, observations, and evidentiary materials
- Courtroom testimony during pretrial and trial proceedings
Civil Litigation
Objective polygraph testing for civil disputes where credibility and truthfulness are central to the outcome of the case. Examination results are documented with precision and can be presented to support your litigation strategy.
- Credibility assessments for key witnesses and parties
- Detailed written examination reports
- Expert testimony available if required
Pre-Trial Investigation
Thorough pre-trial polygraph services to help defense counsel assess the strength of witness statements before trial. Gary's 20 years at the Dallas County DA's Office and decade with the Dallas Police Department give him unmatched insight into how investigators and prosecutors evaluate evidence.
- Witness statement evaluation and credibility assessment
- Coordination with defense counsel on case strategy
- Aerial and crime scene photography support available
Post-Conviction Matters
Polygraph examinations supporting post-conviction relief efforts, appeals, and ongoing supervision compliance. Gary's experience on both the prosecution and defense sides of criminal cases makes him uniquely qualified to assist with post-conviction work.
- Post-conviction relief and appeal support
- Supervision compliance examinations
- Coordination with appellate counsel
Sex Offender Supervision (PCSOT)
Licensed by the American Polygraph Association and Texas JPCOT to administer polygraphs for sex offender supervision and management. PCSOT (Post-Conviction Sex Offender Testing) examinations are conducted with strict adherence to APA standards.
- APA PCSOT certified examiner
- Texas JPCOT licensed
- Full compliance with APA standards and protocols
Domestic & Family Cases
Sensitive, professional polygraph examinations for family violence, child abuse, and domestic case investigations. Gary spent years assigned to the Child Abuse and Family Violence divisions at the Dallas County DA's Office, giving him deep expertise in these sensitive matters.
- Family violence and domestic dispute examinations
- Child abuse case support
- Handled with discretion and professionalism
Process
How It Works
Initial Consultation
Contact Gary directly to discuss your case. He will advise on whether a polygraph examination is appropriate and how the results can support your defense strategy.
Examination Scheduling
Once retained, Gary will coordinate directly with you and your client to schedule the examination at a time and location that works for all parties.
Forensic Examination
The examination is conducted using APA-standard protocols. Gary's decades of investigative experience ensure the process is thorough, professional, and defensible.
Written Report
A detailed written report of the examination findings is provided to retaining counsel. Gary is available for follow-up questions and, if needed, expert testimony.
Ready to discuss your case?
Contact G.L. Traylor directly to schedule a consultation.