"[4] A task force composed of local law enforcement officials and FBI agents, called Operation HALT (Homicide/Abduction Liaison Team), has been formed to investigate the incidents.

[66] Three years later, in 1976, Don Morris and his deputy, Tommy Deal, were arrested and convicted of various crimes, including torture and other misconduct against detainees.

It was only after his death that a number of police officials, including the former Harris County District Attorney, stated their belief that Self was wrongly convicted.

[68] An investigation by the League City police and the FBI in the 1970s identified another local resident, Edward Harold Bell, a known exhibitionist, as a suspect.

In the mid-1970s, he acquired a plot of land in Dickinson and lived near the place where two more victims, Brooks Bracewell and Georgia Geer, were last seen alive.

He posted bail several weeks later and in order to avoid conviction and further incarceration, he fled Texas and escaped from the United States, evading police for more than two decades.

In 1993, he was arrested in Panama and extradited back to the United States, where he was subsequently convicted of Dickens' murder and received a 70-year sentence.

[71] In 2013, Mark Roland Stallings, a convicted kidnapper serving a life term, confessed to killing a girl, later identified as Donna Prudhomme, in 1991 and dumping her body in the fields.

At the time of the murder, Stallings was living and working in League City near the homes of some of the girls who went missing and were subsequently found dead.

Hedrick[76] had a previous criminal record that included charges of trespassing, theft, abuse of a corpse, attempted arson, possession of marijuana, driving while intoxicated and sexual assault.

Suspected serial killer Clyde Edwin Hedrick was brought in for questioning in 1985 in relation to Beason's suspicious death; he admitted that both of them had gone swimming in a nearby lake upon leaving a local bar, but he further stated that she had accidentally drowned while in the water.

[77] In 1987, 30-year-old John Robert King phoned the El Paso police, claiming that on May 24, 1986, he, together with 33-year-old Gerald Peter Zwarst, attacked Shelley Sikes while she was in her car, after which the girl was raped and strangled.

Both men were asked to indicate the whereabouts of Sikes' body in exchange for avoiding life sentences, but their directions failed to uncover it.

[36] In April 2012, sixteen years after Krystal Jean Baker's beaten, raped, and strangled body was found, Kevin Edison Smith was arrested and convicted of murdering her.

After this revelation, Reece confessed to killing Jessica Lee Cain and Kelli Ann Cox, leading the investigators to the bodies' burial sites.

The film focuses on the lead police detectives, Captain Brian Goetschius and Mike Land, who dedicated their careers to solving the mysteries of Interstate Highway 45.