Caitlin Schunn

Michigan TV anchor Diane King received threatening letters and had her home broken into before her murder. 

Since being released from prison for a 2008 manslaughter, Keith Gibson has been convicted of killing two in Delaware and is suspected of killing four others in Philadelphia. 

“She was in a fight for her life, and dropped off that balcony,” law enforcement said of Amie Harwick’s murder on A Plan To Kill.

“He was plagued with depression and suicidal ideations for the bulk of his adult life. Long before he was in a wheelchair," lawyers argued of Ron Willaims in Snapped. But that wasn't the whole story.

“Bianca left clues. She left evidence,” police said of Bianca Tanner’s disappearance and murder on Killer Relationship with Faith Jenkins.

There have been many bizarre and disturbing murder plots throughout United States history.

Joyce Pelzer told another girlfriend, “I am not a good person,” before confessing to murder. 

“Five rounds to the back of the head for somebody that’s 83 — that’s overkill,” police said of Jack Rains’ death on Killer Relationship with Faith Jenkins.

Premeditated murder will be explored in the new Oxygen series A Plan To Kill.

Roberta Samard claimed she was trying to kill herself when she accidentally shot her husband, Ken, but a look at her marriage indicated otherwise.