The Quatermass Xperiment (1955)

The Quatermass Xperiment (a.k.a. The Creeping Unknown in the United States) is a 1955 British science fiction horror film from Hammer Film Productions, based on the 1953 BBC Television serial The Quatermass Experiment written by Nigel Kneale.

The film was produced by Anthony Hinds, directed by Val Guest, and stars Brian Donlevy as the titular Professor Bernard Quatermass and Richard Wordsworth as the tormented Carroon.

Jack Warner, David King-Wood, and Margia Dean appear in co-starring roles.