The Great St Trinian's Train Robbery

"Alphonse" Askett (Frankie Howerd) is the operational leader of a gang of crooks who are led behind the scenes by an invisible mastermind. He gives instructions to Askett about the robbery, Operation Windfall, using a variety of James Bond-like communications devices. The crooks hide the loot in Hamingwell Grange, a deserted country mansion, and after waiting for the hue and cry to die down they return to collect the mailbags which contain £2.5 million (the same amount as in the real robbery)