The Dock Brief (US title Trial and Error) is a 1962 black-and-white British legal satire directed by James Hill, starring Peter Sellers and Richard Attenborough, and based on the play of the same name written by John Mortimer (creator of Horace Rumpole).The film had its World Premiere on 20 September 1962 at the Plaza Theatre in London's West End.Richard Attenborough was nominated for the 1963 BAFTA Award for best British Actor for his role.