A group prison breakout goes from bad to worse when the desperate warden tries to steal the gang's dough.

Down-on-his-luck Mike Cormack is hired to fly to a Caribbean island to retrieve a missing ruby. On the island, possibly involved with the ruby's disappearance, is his ex-girlfriend.

Slick lawyer Thomas Farrell has made a career of defending mobsters in trials. It's not until he meets a lovely showgirl at a mob party that he realizes that there's more to life than winning trials. Farrell tries to quit the racket, but mob boss Rico Angelo threatens to hurt the showgirl if Farrell leaves him.

Julie, an American on vacation in Mexico, spots a giant, one-eyed amoeba rising from the ocean, but when she tries to tell the authorities, no one believes her. She finally teams up with a marine biologist in an attempt to destroy it.

A band of murderous cowboys has imposed a reign of terror on the town of Warlock. With the sheriff humiliatingly run out of town, the residents hire the services of Clay Blaisedell as de facto town marshal. He arrives along with his friend, Tom Morgan, and sets about restoring law and order on his own terms whilst also overseeing the establishment of a gambling house and saloon.