Movie Plot : A spacecraft which returns from the first manned flight to Venus, crashes into the sea and releases a small monster that accidentally crawled aboard. The monster however proves to be a dangerous Ymir, and when the animal becomes an adult, it threatens to attack Rome.

Genre : Science Fiction

Also starring : William Hopper, Joan Taylor, Frank Puglia, John Zaremba, Thomas Browne Henry, Tito Vuolo, Jan Arvan, Arthur Space, Bart Braverman, ...

Also starring : Coleen Gray, Elisha Cook Jr., James Griffith, Jay Adler, Jay C. Flippen, Marie Windsor, Robert Williams, Sterling Hayden, Steve Mitchell, Ted de Corsia, ...

Also starring : Bob Steele, Don Beddoe, Everett Sloane, Humphrey Bogart, Jack Lambert, Roy Roberts, Ted de Corsia, Tito Vuolo, Zero Mostel, Adelaide Klein, ...

Also starring : Alex Nicol, Charles Bickford, John McIntire, Richard Conte, Shelley Winters, Stephen McNally, Tito Vuolo, Chubby Johnson, Minerva Urecal, Robert A. O'Neil, ...

Also starring : Charles Victor, Jane Wyatt, John Dall, Lee J. Cobb, Morgan Farley, Tito Vuolo, Alan Wells, Art Millan, Bud Wolfe, Charles Arnt, ...

Also starring : Cary Grant, Jason Robards Sr., Lex Barker, Lurene Tuttle, Melvyn Douglas, Myrna Loy, Nestor Paiva, Reginald Denny, Tito Vuolo, Connie Marshall, ...

Also starring : Cary Grant, David Niven, Edgar Dearing, Elsa Lanchester, Erville Alderson, Eugene Borden, Gladys Cooper, Isabel Jewell, James Gleason, Loretta Young, ...