Quatermass 2 (1957)
Director: Val Guest
Actors: Brian Donlevy, John Longden, Sidney James
Runtime: 85 min.
Professor Quatermass investigates a sinister government project and uncovers an alien invasion.
Trivia: Brian Donlevy played the leading role in the 1950s TV series Dangerous Assignment. He also starred in several film noir classics (e.g. The Big Combo, Impact).