Watch 'Unknown Serial Killers of America' Online Streaming (All Episodes)

Unknown Serial Killers of America

2025 -

Explores the chilling cases of lesser-known serial killers whose crimes went unnoticed for years, leaving a trail of fear and unsolved murders before they were finally caught.

"Unknown Serial Killers of America" — show produced in USA and released in 2025. It has a great rating on IMDb: 7.9 stars out of 10. "Unknown Serial Killers of America" is currently available to stream on Hayu. Click on a playlink to watch it now!