The Creeping Unknown/Fun Facts
From The Grindhouse Cinema Database
- Among the materials used by Les Bowie to embellish the monster were bovine entrails and tripe.
- This film was originally slated to be released in the United States by 20th Century Fox. However, to convince more exhibitors to install Cinemascope equipment, studio chief, Darryl F. Zanuck, pledged that all future 20th Century Fox releases would be in Cinemascope or a compatible anamorphic process. Since this Hammer production was shot in standard academy (1.33:1), it had to be passed over. It was picked up and released through United Artists.
- The original British release billed Brian Donlevy and Jack Warner before the main title (The Quatermass Xperiment), with Margia Dean heading the supporting cast after the title. For the US release, Donlevy, then Ms. Dean, and then Warner were billed before the main title (The Creeping Unknown), moving Thora Hird up to the top of the supporting cast, the remaining order of which was not changed. Also, Val Guest did not receive co-screenplay credit on the US credits, Nigel Kneale's credit was altered to simply "Based on the play by", and the Acknowledgments credits were omitted altogether.