Another Roger Corman low-budget, wham-bam, quickie sci-fi film with silly looking monsters and fairly laughable dialog. This one concerns an expedition to a Pacific island to study the effects of atomic radiation and to find out what happened to the last group of scientists that
disappeared. What they find is two giant crabs who have eaten the last group of explorers, absorbed their knowledge, and imitated their human voices to entrap more victims. Good premise and some scary moments make this silly fun.