Stars James Craig, Gloria Talbot and Lon Chaney Jr. A woman loss track of he scientist brother and she hires a group of greedy rogues to help her search the jungles for him. The jungle is radioactive with uranium which has caused lizards to mutate into giant monsters and...well, her brother too. Her brother is now a forty foot, bald, bug-eyed mutant. The sister very gently tries to re-kindle his memory with care, while one of the other guys throws a spear into his eye. You shouldn't aggravate a forty-foot mutant monster.
1950s radioactive mania at its finest.