In the early 1980s, a series of brutal attacks shook Minnesota- but it wasn't just the violence that haunted investigators. It was strange 911 phone calls.

After each attach, a man would call 911 with his voice trembling, crying and apologizing for what he'd done. He wept, he begged, he asked to be stopped all while refusing to turn himself in.

This week is a Monday Murderer episode where we dive into the chilling case of Paul Stephani, also known as the Weepy Voiced Killer.

This week we dive into one of Europe's most haunting disappearances - the case of 28 year-old Lars Mittank. What began as a summer vacation in Bulgaria spiraled into paranoia, fear and a final chilling moment caught on airport CCTV. Lars walked into Varna airport.. later sprinted out and was never seen again.

Was it panic? Head trauma? A mental health crisis? Or was someone really following him?

In the spring of 1946, the quiet border town of Texarkana was plunged into an unprecedented reign of terror. Known simply as the "Moonlight Murders" a mysterious, hooded figure—dubbed the "Phantom Killer"—stalked lovers' lanes, attacking victims and leaving a trail of bloodshed that captivated the nation. Dive into this chilling, unsolved case as we explore the four savage attacks, the desperate manhunt, and the paralyzing fear that caused residents to lock their doors and arm themselves as the killer seemed to vanish into the night.