Katie Ellis Dufour has been a member of Behavioral Measures & Forensic Services Southwest, Inc., since 2015. She began her professional career with the Texas Department of Family and Protective Services and later became a parole officer with the Texas Department of Criminal Justice before attending Veridicus International Polygraph Academy in 2015. During her polygraph career, she has become adept at sex offender testing with special emphasis on the juvenile sex offender.