Season 19 : Killer Pairs  Marlene Olive had a fractured relationship with her parents. After an intense fight in 1975, she convinced her boyfriend, Chuck Riley, to make them go away. For more storie

Season 19 : Killer PairsDenise Williams was married to Mike Williams, but she wanted to be with his best friend, Brian Winchester. She didn't want the shame of getting divorced, so she talked Brian

The Dardeen Family was hoping to live a simple life in Ina, Illinois, but when Keith didn't show up for work in November of 1987, the whole family was found dead and the killer would never be caught.

Season 19 : Killer PairsIn the 1990s, a pair of criminal sisters realized they could use children as a distraction during their robberies. The began a years long campaign of kidnapping children to

Season 19 : Killer PairsJack Twining was a lifetime criminal who had no concern with anyone else's life. When he met Bobby Davis, together they spent their time stealing anything they could and kil

Season 19 : Killer PairsIn 1997, a pizza was ordered to an abandoned house in Franklin, New Jersey and when the delivery drivers showed up. They were shot and killed just for the thrill of it.For

Season 19 : Killer PairsIn the late 70s and early 80s, London was plagued by a series of sexual assaults near rail stations. When the assaults turned to murders, the police scrambled to find out wh

Season 19 : Killer PairsIn the late 70s and early 80s, two men in Italy decided that it was up to them to clean up society. They went on a campaign of brutal murder in order to clean the streets fr

Season 19 : Killer PairsWhen Chris Regan disappeared from Iron River in Michigan's Upper Peninsula, it wouldn't take long to learn about a love triangle and a deadly agreement made between a local

Season 19 : Killer PairsAfter Alex Garcia convinced his girlfriend, Michelle Hoover, to commit a murder, he thought he was in the clear after the authorities got an innocent man to confess to the c