Deadly Women is an American documentary television series focusing on true crime, specifically female killers. It first aired in 2005 on the Discovery Channel. It was originally based on a TV documentary film called Poisonous Women, which was released in 2003. Deadly Women started as a miniseries comprising three episodes: "Obsession", "Greed", and "Revenge". After a three-year hiatus, the show resumed production in 2008 and began airing on the Investigation Discovery channel as a regularly scheduled series. The series is produced in Australia by Beyond International.