This is the one where Billy Gray gets his arm ripped off.
This movie is an odd mix, with a good story but poor script, good acting by half the cast, bad by the other half, apparently decent production values but bad special effects. It's based on a novel by Murray Leinster, one of the most popular sci-fi writers of the 1950s & '60s, whose work inspired Irwin Allen's The Time Tunnel and The Land of The Giants.

The story follows the same formula as The Thing and It The Terror from Beyond Space - about a group of people terrorized by a monster in an isolated location - in this case an island. The monster was brought on a plane from Antarctica.

The good actors here include Billy Gray (The Day The Earth Stood Still, On Moonlight Bay, Father Knows Best) and Bobby Van (The Affairs of Dobie Gillis, Lost Horizon). They both have some good scenes and add entertainment value to a film that otherwise might be compared to the corniest 1950s B movies.

I've always remembered this film from my childhood due to the scene in which the monster rips off Billy Gray's arm.

Hey, it's 50's Classic Sci-Fi
This movie is an above average 50's Classic Sci-Fi, if you truly love them. This movie will have you rolling with laughter.

I never understand why this movie gets such low ratings
Even though it was made in the mid 60s, to me this movie as an above average example of a 50s monster movie (plus it's in color). The script is fairly literate, Anthony Eisley makes a stalwart, but not always right, leader of a group isolated on an island, and Walter Sande makes a great wise old doctor/scientist. Even Mamie van Doren plays her role of nurse pretty straight. The happenings have a mysterious quality about them that maintains tension. Admittedly, people wander off into danger perhaps a little too often, but hey, it's a thriller! And too much time is spent off the island with the higher commanders, who mostly seem to be acted by amateurs...Still, if you like 50s monster movies, I recommend this movie.

Very Very Funny
This is one of the funniest movies i have ever seen a must see so bad it is funny

Terrible!!!
Both of these films were extremely poorly made. The acting, directing, and technical work are all very bad. The VHS version I saw was of a very poor, grainy quality. Mamie Van Doren was a very sexy looking woman in her prime. However, neither film does her much justice. Not that Mamie could act.... I would advise you not to waste your money.