The Imposter: 'He passed the polygraph, and we knew he was lying' – video

The Imposter: 'He passed the polygraph, and we knew he was lying' – video. Henry Barnes talks to Bart Layton, director of a new documentary about Frédéric Bourdin, a 23-year-old Frenchman who successfully pretended to be a long-lost Texan teen, and to Charlie Parker, the private investigator who found fault with Bourdin's story• The Imposter is released in the UK on August 24