In a quiet Ohio town, unsettling letters began arriving in mailboxes, each filled with accusations, secrets, and threats. Even after a man was convicted, the letters didn’t stop. In this episode, we drift back to Circleville in the late 1970s to explore one of America’s most chilling unsolved mysteries: the Circleville Letters.

As you drift off to sleep, ask yourself, who was watching? Who kept writing? And why has the truth remained hidden for decades?