One killer, six young girls, one city gripped by fear. In the early 1970s, an unknown predator stalked the highways around Washington, D.C., snatching children off the streets and leaving their bodies by the roadside. In this episode, we step into the shadow of the Freeway Phantom: a faceless figure who taunted police, devastated families, and then vanished, leaving behind a trail of questions that still haunt investigators today.