The Green Man

In this dark comedy, a professional contract killer, Alastair Sim as Harry Hawkins, is contracted to blow up a prominent businessman, Sir Gregory Upshott, at a seaside hotel called The Green Man. However, his plan is discovered by vacuum salesman William Blake, played by George Cole, who teams up with the businessman's secretary, Ann Vincent, played by Jill Adams, to stop the murder. As the two try to prevent the explosion, they must navigate a series of hilarious misadventures, including a suspiciously timed radio broadcast that seems to be connected to the plot.