Offbeat British comedy/thriller about a stranded bus and its passengers, one of whom just masterminded a daring robbery and hid a fortune in gold aboard the bus. Because the thief is also the bus's driver, his escape seems assured, until a layer of thick London fog diverts the vehicle into unknown territory. Margaret Rutherford, Frankie Howerd, and a young Petula Clark star. 77 min. Standard; Soundtrack: English.