Killer Couples: Deadly Duos and Their Horrifying Deeds

Murder and crime are not always a solo affair. Sometimes, when one is confronted by the horrifying truth of their partner's evil deeds, rather than recoiling in horror, they instead join in on the carnage. In other times, it is the love of evil that brings them together, and they share in monstrous fantasies that they enact on the world. Covering up each other's crimes they can prove difficult to catch.