Attack of the Crab Monsters is a 1957 independently made American black-and-white science fiction-horror film, produced and directed by Roger Corman (via his Los Altos Productions), that stars Richard Garland, Pamela Duncan, and Russell Johnson. The film was distributed by Allied Artists as a double feature showing with Corman's Not of This Earth.
The film concerns a second scientific expedition that is sent to a remote Pacific island to discover what happened to the scientists of the first. Unknown to them when they arrive, the island is inhabited by a pair of radiation-mutated giant crabs that not only consumed the members of the first expedition, but absorbed their minds, and now plan to reproduce their kind in numbers.
Cast
Richard Garland as Dale Drewer
Pamela Duncan as Martha Hunter
Russell Johnson as Hank Chapman
Leslie Bradley as Dr. Karl Weigand
Mel Welles as Jules Deveroux