Credentials & Background
40+ Years in Criminal Justice
G.L. Traylor brings a career spanning law enforcement, prosecution, criminal defense investigation, and forensic polygraph examination — a combination of experience few examiners can match.
Background
Professional Background
G.L. Traylor has spent more than four decades in the criminal justice system — first as a patrol officer and SWAT team member with the Dallas Police Department, then as a Senior Criminal Investigator at the Dallas County District Attorney's Office for 20 years, and now as a private criminal investigator and licensed forensic polygraph examiner.
His 20 years at the Dallas County DA's Office gave him deep experience across Misdemeanor and Felony Trial, Child Abuse, Organized Crime, and Family Violence divisions. He worked in cooperation with municipal police departments and state and federal law enforcement agencies, managing approximately 100 cases per year.
Since 2005, Gary has operated G.L. Traylor Investigations & Associates, assisting criminal defense attorneys with all aspects of case management, trial preparation, witness location and interviewing, and forensic polygraph examination. He holds a Polygraph Diploma from the Polygraph Institute, accredited by the American Polygraph Association.
Investigative Skills
Work History
Career Timeline
Criminal Investigator & Forensic Polygraph Examiner
G.L. Traylor Investigations & Associates
Assisting criminal defense attorneys with case management, trial preparation, witness investigation, and forensic polygraph examinations.
Criminal Investigator
City of Dallas Office of Inspector General
Investigated fraud and abuse cases related to the City of Dallas and its contractors.
Criminal Investigator
G.L. Traylor Investigations & Associates
Assisted criminal defense attorneys with all aspects of case management and trial preparation, including capital murder, murder, sexual assault, aggravated robbery, drug offenses, child abuse, and family violence cases.
Senior Criminal Investigator
Dallas County District Attorney's Office
Assisted Assistant District Attorneys with all phases of case management and trial preparation across Misdemeanor and Felony Trial, Child Abuse, Organized Crime, and Family Violence divisions. Managed approximately 100 cases per year.
Patrol Officer, Field Training Officer, Sr. Cpl., Tactical
Dallas Police Department
Patrol officer, Field Training Officer, and rifleman on an 8-man SWAT/Tactical team (Squad E-2). Duties included special assignments, crowd control, barricaded persons, VIP protection, and hazardous warrant execution.
Licenses & Certifications
Licenses & Certifications
Polygraph License
Polygraph Diploma
The Polygraph Institute, accredited by the American Polygraph Association
Field of Polygraph and the Detection of Deception
State License
Investigations Company Owner / Manager
Texas Department of Public Safety
Licensed 2005 – Present · G.L. Traylor Investigations & Associates
Polygraph Certification
PCSOT Certified Examiner
American Polygraph Association
Post-Conviction Sex Offender Testing
Polygraph Certification
JPCOT Licensed
Texas JPCOT
Sex Offender Supervision and Management
Memberships
Professional Associations
American Polygraph Association
Member
Texas Criminal Defense Lawyers Association
Member
Academic
Education
Bachelor of Arts, Criminal Justice
Dallas Baptist University·Dallas, TX·
Basic, Intermediate & Advanced Certificates — Law Enforcement
Dallas Police Academy·Dallas, TX·
Ready to work with Gary?
Contact G.L. Traylor directly to discuss your case and schedule a forensic polygraph examination.