Her Killer Lived Just Four Doors Away. No One Knew for 47 Years. (Pennsylvania 1975)

Criminal Mysteries

In December 1975, 19-year-old Lindy Sue Biechler was found stabbed to death in her Lancaster County apartment. Her killer left behind one piece of evidence — and then vanished into normal life for 47 years. Police interviewed 300 people. Called in the FBI. Consulted psychics. Nothing. Until a geneti