In this episode, brothers Joe and Dan from Middlesbrough are hoping to spot the impostors and win £10,000. But with a line-up including a singing scientist, a prison officer and an electrician, it may be tougher than they thought. The music star in this episode is Alexandra Burke.

Paddy McGuinness hosts the singing game show, in which contestants, aided by a celebrity panel, must spot good singers without hearing them. Gabby Logan assists the player who is hoping to win £10,000 by guessing correctly, while regular panellists Jimmy Carr, Alison Hammond and Amanda Holden are joined by X Factor star Leona Lewis. Can they sort out the wheat from the chaff just by their lip-syncing skills?