Coral Watts is the subject of true crime series “Unknown Serial Killers of America." The series explores murderers unknown to ...

Learn more about serial killer Carl Watts, whose crimes are detailed in the Oxygen show Unknown Serial Killers of America.

Carl Watts, once largely unknown to the American public, is now recognized as one of the most prolific serial killers in U.S. history.

The first episode of Unknown Serial Killers of America focuses on the crimes of Carl Eugene Watts, known as the "Sunday Morning Slasher." Watts reportedly murdered many women in the US states of ...