Marraige vows are easy to make, but not so easy to keep. This series takes the vow "for better or worse" to a nightmare level. These are the real stories of women who murder their husbands. We know who the killer is, but why did she do it? Find out what can drive these loving wives into cold hearted killers through re- enactments, interviews from the surviving friends and family, reporters and authors and the law enforcement that worked on the case.