
When an underwater volcanic eruption tears up the sea bed off the coast of Ireland, two treasure hunters make the discovery of a lifetime when they encounter a gigantic prehistoric monster that’s been unleashed from the earth’s crust. After capturing the beast, the pair transport the creature down to London where it’s given the name of “Gorgo” and put on display to an avid public. Little do they realize that Gorgo is just an infant, and that his exponentially larger mother is about to emerge from the depths to avenge the capture of her offspring.
Cast

Bill Travers
Joe Ryan

William Sylvester
Sam Slade
Vincent Winter
Sean

Christopher Rhodes
McCartin

Joseph O'Conor
Prof. Hendricks

Bruce Seton
Prof. Flaherty

Martin Benson
Dorkin

Maurice Kaufmann
Radio Reporter

Basil Dignam
Admiral Brooks
Barry Keegan
Mate

Tommy Duggan
First Naval Officer
Howard Lang
First Colonel
Dervis Ward
Bosun
Mick Dillon
Gorgo

Nigel Green
Bulletin Announcer (Uncredited)
Crew

Eugène Lourié
Director
Robert L. Richards
Screenplay, Screenstory
Daniel James
Screenplay, Screenstory
Eric Boyd-Perkins
Editor

Freddie Young
Director of Photography
Maurice King
Executive Producer
Frank King
Executive Producer
Herman King
Producer
Wilfred Eades
Producer
James Leicester
Associate Producer
Stella Morris
Makeup Artist
Tom Howard
Visual Effects

Angelo Francesco Lavagnino
Original Music Composer
Roy Gough
Still Photographer
Elliot Scott
Art Direction
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