 At the dinner party given by the gangster, there is a butler walking  across a room behind a doorway. The butler was Michael J.R. Gill who  was working with the catering staff hired for the film. After the  filming, he actually served the food used in the scene to the cast  and crew. Gill was not an actor, but was actually a real English  butler and for seven years was butler to British actor  Lawrence Harvey (I) (qv), prior to his death.