A detective story unveils the truth behind one of the most incredible stories of survival in the world. Marina Chapman, 63, is housewife living in Bradford, in the North of England. She doesn't know her real name or who her biological family are. She claims that as a child in Colombia she was abducted and abandoned in the jungle, and that she survived by living alone with Capuchin monkeys for five years.
Watch a video preview of last night's TV documentary below: