The Alibi

The episode 'The Alibi' from *Forensic Files* recounts the 1991 murder of 17-year-old Crystal Faye Todd in Conway, South Carolina. After her car was found abandoned in a school parking lot, her body was discovered in a nearby ditch with 31 stab wounds, indicating a brutal, sexually motivated killing. Initial suspects included a convicted thief, Andy Tyndall, but forensic evidence—specifically a rare blood type and a DNA profile occurring in just 1 in 250 million Caucasians—exonerated him. A witness’s sketch of a man and woman near the car led investigators to Crystal’s mother and her boyfriend, but that lead collapsed when the witness admitted to being drunk. A behavioral profile then pointed to a white male in his early 20s, a friend of Crystal’s, who lived nearby and had a history of violent behavior. When 52 male classmates volunteered for DNA testing, Ken Register’s sample matched the crime scene DNA. Though he had a strong alibi supported by his mother and girlfriend, he confessed under pressure after being told his mother urged him to be truthful. He claimed the encounter began consensually but turned violent. Despite recanting and claiming coercion, multiple DNA tests confirmed his guilt. He was sentenced to life plus 35 years, though he maintains innocence. Crystal’s mother, Bonnie Todd, continues to visit her grave, crediting forensic science for justice. The case highlights the power of DNA evidence in solving cold cases, even when suspects have solid alibis and initial leads are misleading. It also raises ethical questions about interrogation tactics, the reliability of eyewitnesses under influence, and the psychological toll on families. The episode underscores how forensic science can overcome emotional bias and circumstantial red herrings, ultimately delivering justice where traditional investigation failed.