Once Upon A Crime | True Crime

In 1978, a teenage hitchhiker accepted a ride in Northern California—only to be brutally attacked by a violent predator. The assault on Mary Vincent was so horrifying it sent shockwaves through the public, and her attacker, Lawrence Singleton, became a chilling warning about the dangers of accepting rides from strangers. But against all odds, Mary survived—and her story of resilience is one that will stay with you long after the episode ends.