You know the story: A radioactive rock at the bottom of the ocean causes a sea creature to mutate into a horrible, amphibious monster. This seemed to happen a lot in the 1950s. Director Dan Milner (who also gave us From Hell It Came, a film about an evil tree stump) hits all the right notes here, helped by a cast that includes Kent Taylor, Cathy Downs, and Michael Whalen. Also, pay attention to the score by Ronald Stein, who graduated from the Yale School of Music to become the Tchaikovsky of B-Movies, scoring such "classics" as Attack of the 50-Foot Woman, and Invasion of the Saucer Men!