
When the first manned flight to Venus returns to Earth, the rocket crash-lands in the Mediterranean near a small Italian fishing village. The locals manage to save one of the astronauts Colonel Calder, the mission commander. A young boy also recovers what turns out to be a specimen of an alien creature. Growing at a fantastic rate, it manages to escape and eventually threatens the city of Rome.
Cast

William Hopper
Colonel Robert Calder

Joan Taylor
Marisa Leonardo

Frank Puglia
Dr. Leonardo

John Zaremba
Dr. Judson

Thomas Browne Henry
Maj. Gen. A.D. McIntosh

Tito Vuolo
Commissario Unte

Jan Arvan
Signore Contino - Government Official

Arthur Space
Dr. Sharman

Bart Braverman
Pepe
Don Orlando
Fisherman Mondello (uncredited)
George Khoury
Fisherman Verrico (uncredited)

Darlene Fields
Reporter Reynolds (uncredited)
George Pelling
Reporter Maples (uncredited)

James Dime
Felix Roi, a French reporter (uncredited)
Sid Cassel
Farmer (uncredited)

Ray Harryhausen
Man Feeding Elephant (uncredited)

Noel Drayton
1st Reuters News Correspondent (uncredited)
Rollin Moriyama
Dr. Koruku - Japanese Scientist
Crew

Nathan Juran
Director
Robert Creighton Williams
Screenplay

Christopher Knopf
Screenplay

Charlotte Knight
Story
Edwin H. Bryant
Editor
Carlo Ventimiglia
Director of Photography
Irving Lippman
Director of Photography

Charles H. Schneer
Producer
Lawrence W. Butler
Special Effects

Ray Harryhausen
Visual Effects
Mischa Bakaleinikoff
Original Music Composer
Robert Priestley
Set Decoration
Cary Odell
Art Direction
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