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X The Unknown (1956)

There are times in an Academy Award Winning Actor’s life when they gotta put food on the table.
I assume this is what Dean Jagger (Best Supporting Actor, 1949, “Twelve O’Clock High”) was thinking when he signed on the dotted line for “X The Unknown”.

The movie itself was a blatant attempt to sidestep Quatermass creator Nigel Kneale’s cease and desist from using his character; undeterred, they basically filed the serial numbers off the script (renamed the character) and filmed it anyway.

That’s how we get a Best Supporting Actor waving around a Geiger counter and battling a giant blob that crawls up out of the earth and melts people’s faces off.


The Episode

Words From Warren

I like to quote from one of my favorite reference books, the late Bill Warren’s “Keep Watching The Skies: American Science Fiction Movies of the Fifties”.  Mr. Warren does not suffer fools gladly, and does not mince his words when it comes to either praising a film or flaying it alive.

“This unpretentious thriller is one of the best second rate science fiction films of the 1950’s. Though the idea on which it’s based is moderately preposterous, the film is made in such a strong, realistic style, featuring understated naturalistic performances, that it remains convincing throughout. As with most British SF films of the period, it introduces one major idea and sticks with it to the end.”


Dean Jagger – Wikipedia, IMDB, Fandango, WikiVisually

Dean Jagger Obituary – LA Times, Variety

C. Scott Rollins’ TV and Film Trivia Blog

“The Conversion of Hollywood’s Brigham Young” – Church of Latter Day Saints

Google Books – “Mr. Novak: An Acclaimed Television Series”

Google Books – “The Lyceum Magazine”

Samuel Taylor Coleridge – “Kubla Khan” poem (

Lakeside, Ohio – “The Chautauqua Movement”

“X The Unknown” – Theatrical Trailer

“X The Unknown” – Complete Film on DailyMotion


I am very grateful to be able to use the music and sound effects of so many wonderful creators.
You can find a list of all music used, and all sound effects used, and links, here, on our Credits page.

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