Lantern-jawed British comedian Frankie Howerd, best known to American TV fans as the star of the raucous historical satire Up Pompeii, heads the cast of The Runaway Bus. Howard plays Percy Lamb, a novice bus driver assigned to drive a coach from one London ariport to another. Alas, the city is enveloped in a thick fog, and poor Percy gets lost, along with his half-dozen passengers and a hidden cache of stolen gold. Most of the film's best moments go to Margaret Rutherford as a not-so-sweet old lady and Belinda Lee as a spy-novel addict. Petula Clark, who was already a top recording star in 1954, appears as a perky airline hostess. ~ Hal Erickson, Rovi