Indiana detectives said Katrina Fouts also researched “crimes of passion” on the Internet before her husband, David, showed up dead in a ditch by the side of the road.
A missing anchor, stolen jewelry, and a neighbor's valuable statements helped authorities piece together what happened to Janette Piro and Chris Benedetto.
Although doctors and nurses long suspected an employee of poisoning patients at a Missouri hospital, it took another look at the case from a police officer 20 years later to lead to the arrest of Jennifer Hall for murder.
Investigators initially thought the tragic deaths of Nichole Payne and her son Taylor could be the result of a murder-suicide, but chilling clues at the scene told a different story.