Nurses are often known as angels of mercy. Instead, Canadian RN Elizabeth Wettlaufer, who is featured on "Living With A Serial Killer" Season 2, was called a “shadow of death.”

Cases featured in "Living With A Serial Killer" Season 2 include the Tourniquet Killer and the Cleveland Strangler.

When five sex workers were murdered in a rural town in England, a woman was blindsided by her connection to the crimes.

When a wife and mother shared details of shocking abuse at the hands of her husband, Peter Tobin, she helped authorities capture a serial killer. 

The daughter of a serial killer puts distance between herself and her murderous mother who “doesn’t feel remorse.”

“The man I knew could be good and decent,” Dennis Rader's daughter once said of her infamous father, often known as the "BTK" killer. “That’s why I have to hold on to the belief that he truly did love us."

Is your loved one lying to you about what they're up to? It might seem impossible, but as the subjects in the upcoming Oxygen series "Charmed To Death" will tell you, you never know ...