The BBC is doing everything to keep its Top Gear mystery man The Stig from lifting the lid on his identity.
The company has said it will take legal action to stop its famous faceless star - famously dressed in racing gear with a blackened screen on his helmet - from writing his autobiography, which according to BBC might result in a breach of contract.
The corporation has said that if The Stig reveals his identity, he would spoil viewers' enjoyment of the show and that his autobiography would breach "agreed contractual and confidentiality obligations relating to the programme".
The Stig has been the BBC2 programme's most popular secret identity and only a few executives know who he is. It is rumoured that Top Gear presenters Jeremy Clarkson, Richard Hammond and James May are aware of The Stig's real identity.
The mystery driver, who is known to race on the track in a number of different cars - as well as train celebrities in the show's popular "Star in a Reasonably Priced Car" segment, has become a sort of 'secret' cult phenomenon, with fans donning T-shirts saying "My Dad is The Stig".
© Press Association 2010