About St. Louis Polygraph, llc

St. Louis Polygraph LLC was founded in 2011 by now retired Police Sergeant Derek Piasecki. In September 2021, Derek hired certified polygraph examiner Brian Hilke to assist with exams. Since that time, the Company grew exponentially. In June 2024, Derek retired from the polygraph profession and sold the Company to the current owners and certified polygraph examiners Brian Hilke and Dominic Drago. 

Combined, Brian and Dominic have administered over 1,000 polygraph examinations in both criminal and civil cases. These exams were conducted for federal and municipal law enforcement agencies, prosecuting attorneys, criminal defense attorneys, counseling services, corporations, and private individuals. Our examiners are also experienced in the administration of Post-Conviction Sex Offender Testing (PCSOT).  

We are based in the St. Louis area and have a dedicated office to conduct polygraph exams. We do not travel in from other areas and conduct exams at a virtual/rented office, rented conference rooms, or even at a hotel. All exams are conducted in a professional office location in St. Charles County. Our fee is very reasonable compared to other "networks" who are from out of the area and charge $1,200.00 or more.

Professional

Our examiners are members of the American Polygraph Association (APA) and American Association of Police Polygraphists (AAPP) and attend yearly professional polygraph training seminars. 

Honest

Every exam is audio/video recorded and a written report prepared. We respect all clients’ needs and their confidentiality.

Experienced

Our examiners gained extensive experience while employed with law enforcement agencies and/or serving in the United States Army. Our examiners have conducted exams for criminal cases including murder, child molestation, missing persons, stealing, and other serious criminal cases. 

Please contact us for an appointment or if you have any polygraph-related examination questions.

Brian Hilke is a retired Police Lieutenant who served 25 years in law enforcement. 

 Brian has 18-years’ experience as a Certified Forensic Law Enforcement Polygraph Examiner, where he has conducted over a 1,000 polygraphs in the areas of criminal specific, applicant pre-employment, internal affairs, and other requested exams. 

Brian spent 14 of his 25-year career serving in the roles of Detective and Detective Sergeant, where he gained extensive experience and advanced training in the areas of serious/complex criminal investigations, interview and interrogation, courtroom testimony, applicant selection/ background investigations, and report writing. 

 Brian was also a Shift Supervisor and Section/Division Commander for 18 of his 25 years, where he augmented his skills and knowledge in the areas of training/coaching, policy development, team building/leadership, organizational risk management, crisis/emergency management, and public relations. 

Education and Training

2007 Texas Department of Public Safety Law Enforcement Polygraph School - Austin, TX

2010 Post Conviction Sex Offender Certification - Academy of Polygraph Science.

MA in Criminal Justice and Sociology - Lincoln (MO) University

BA in Criminal Justice, Minor in Sociology - Columbia (MO) College

Completed over 4,800 hours of law enforcement training

Brian attends yearly polygraph training seminars sponsored by the American Association of Police Polygraphists (AAPP) and the American Polygraph Association. Below is a list of all polygraph training seminars he has attended:

2008 APA - Indianapolis, IN

2009 AAPP - Lake Tahoe, CA

2010 AAPP - St. Louis, MO

2011 AAPP - Cambridge, MA

2012  AAPP - Denver, CO

2013 AAPP - Charlotte, NC

2014 AAPP - Henderson, NV

2015 AAPP - Grand Rapids, MI

2016 AAPP - Uncasville, CT

2017  AAPP - Houston, TX

2018  AAPP - Louisville, KY 

2022 AAPP - Phoenix, AZ 

2023  AAPP - Kansas City, MO

2024 AAPP - Cherokee, NC

Professional Memberships

American Association of Police Polygraphists (AAPP) https://www.americanassociationofpolicepolygraphists.org/ - Certified Forensic Law Enforcement Polygraph Examiner #2890

American Polygraph Association (APA) www.polygraph.org

- Full Member

Dominic Drago is a Certified Polygraph Examiner, trained at the renowned 11-week Marston Polygraph Academy in San Bernardino, California, where he attained his Basic Polygraph Examiner and Post Conviction Sex Offender Testing (PCSOT) certifications.

Before becoming a Polygraph Examiner, Dominic served with honor and distinction for 5 years as a Military Police Officer in the United States Army. His military service includes roles as a Traffic Investigator at Fort Leonard Wood in Missouri and as a Patrol Supervisor at USAG Humphreys in the Republic of Korea. During his service, Dominic completed the Army’s 17-week Military Police Academy and 3-week Basic Leader course.

Dominic's exemplary service culminated in an honorable discharge in February 2024, where he achieved the rank of Sergeant/E05 and the following decorations / medals / badges / citations / campaign ribbons:

- Army Achievement Medal

- Army Good Conduct Medal

- Defense Service Medal

- Global War on Terrorism Service Medal

- Korea Defense Service Medal

- Non-commissioned Officer Professional Development Ribbon

- Army Service Ribbon

- Overseas Service Ribbon

- Sharpshooter Marksmanship Badge with Pistol Bar

As a Military Police Officer, Dominic gained extensive investigative experience in the areas of serious/complex crimes (death investigations, sexual assaults, child abuse, violent assaults, domestic assaults, stealing, etc.) as well as interviewing victims, witnesses, and suspects involved in those investigations. 

Dominic is working towards his bachelor’s degree in history and literature through the University of Maryland.