Watch Series: Behind Mansion Walls Released in (2011) - Season 1 produced by USA, The TV Series categorized in Documentary, and content rating TV-14 with duration 30 min broadcasted as these networks Investigation Discovery, Streamed at Putlocker & directed by James Knox, John Mavety, Ian Stevenson. Behind Mansion Walls is an American documentary television series on Investigation Discovery that debuted June 6, 2011. The series, hosted by Christopher Mason, tells the stories of crime and investigation that are unveiled in wealthy families and relationships, with conspiracies, hidden accounts, false identities and secret affairs. It tells stories of murder and mystery on a grand scale. The victims and individuals involved in cases come from upscale levels of society, from oil tycoons to real estate moguls. - Season 1