8. Detective Steve Deffibaugh
Detective Deffibaugh was the lead investigator from the Collin County Sheriff’s Department in charge of the case.
Steve Deffibaugh was a young deputy with the Collin County Sheriff’s Office in 1980 when he was assigned to lead the investigation into Betty Gore’s murder. The scene he walked into at the Gore home in Wylie was one of the most violent in Texas history: 41 ax wounds, a small utility room soaked in blood, and a baby asleep in the next room. From that morning on, Deffibaugh became the steady center of a case that would shake his community and capture national attention.
He managed the crime scene carefully, cataloging evidence and keeping the press at bay while the town spun with rumor. Fingerprints, blood patterns, and witness statements slowly pointed toward Candy Montgomery, a church friend of the victim and the wife of a local engineer. As he traced the connection between Candy and Betty’s husband, Allan Gore, the investigation turned from a mystery to a scandal that made national news.
A Marine Corps veteran, Deffibaugh was known for his calm and precision. The habits he brought from military service — order, patience, and an eye for detail — guided his work and later shaped his long career in public service. After the Montgomery case, he stayed with Collin County, eventually serving as Fire Marshal from 1996 to 2011, then as a Princeton City Council member and Mayor Pro Tempore. Those who know him describe the same traits that marked his early police work: discipline, integrity, and quiet persistence.
In Hulu’s Candy, Justin Timberlake plays Deffibaugh as the straight-faced detective trying to make sense of a crime that defied logic, and later documentaries have revisited his role as the man who pulled truth from chaos. The Montgomery case defined his early career, but it also showed how careful, methodical police work could cut through the noise of shock and sensation, a lesson Deffibaugh carried long after the cameras left Wylie.
