Stacey Castor seemed to be in a panic when she called the police to report that her husband, David Castor, didn't make it into work. She told them he'd been feeling depressed, and was concerned it was suicide. Police went to the Castor home and discovered David's body on his bed, dead from antifreeze poisoning. Based on Stacey's comments, they were primed to label it a suicide and call it a day. But one detective wasn't so sure, especially when he learned Stacey's first husband was also dead...
ABC News | 'Black Widow' Stacey Castor Accused in Anti-Freeze Murder (Angela Chambers)
Suicide Letter Scan