Blood Relatives is an American documentary television series on Investigation Discovery that debuted on June 7, 2012. Narrated by Brenda Strong, the voice of Desperate Housewives character Mary Alice Young, the series examines murders that were committed within families. Blood Relatives has been renewed for a third season.Blood Relatives has one or more episodes streaming via tv everywhere with Investigation Discovery, streaming with subscription on True Crime Files (Via Prime Video), available for purchase on iTunes, and 3 others. It's a crime and documentary show with 66 episodes over 6 seasons. Blood Relatives is still airing with no announced date for the next episode or season. It has a high IMDb audience rating of 7.6 (198 votes).