Summary In August of 1994 9-year-old Dianna Rebollar is found raped and strangled to death in an empty Houston parking lot. Det. Bob King of the Houston PD takes note of the tourniquet left around the young victim's neck and, thinking it might be one killer's signature, shares photos of the deadly device with other investigators. Back at the station, King learns of a similar attack two years earlier in which 21-year-old Maria del Carmen Estrada was sexually assaulted, strangled with a tourniquet and dumped in a Dairy Queen drive-thru.Though forensic evidence is collected, both cases remain unsolved for another year when Barbara Magana at Houston's Channel 2 News contacts the Harris County Sheriff's Office and tells them about a call she received on the tip line. Turns out Magana may have taken a call from a serial killer who told her that in a field just beyond Houston's city limits a woman's dead body awaits investigators. Det. Roger Wedgeworth and his team head out to the field, and follow a foul odor to the body of severely decomposed woman that lies in the grass with a tourniquet tightly cinching her neck. This scene immediately calls to mind the cases detectives at the PD have been working, so investigators from the sheriff's office contact the city PD and a City-County Task Force is established to track down the tourniquet killer. Every lead is pursued, but after six months of hard work the team has nothing to show for its efforts.

• Crime
• Documentary