Sequence [14]

Executive Producers Matt Frederick and Trevor Young sit down for an exclusive behind-the-scenes conversation about the makings of the Monster series. Get the scoop from the beginning and find out how a one-off investigation into a serial killer in Atlanta became an award-winning global podcast franchise. See omnystudio.com/listener for privacy information.

More suspects bring more questions.

A frightening final theory

Fascination leads beyond obsession, as a new Zodiac emerges in New York City.

New theories bring new suspects. But for many independent investigators, those theories are truth.