In this exciting jungle adventure the esteemed archaeologist, Dr Singleton, and his daughter, Mary, travel to mystical Africa in search of an ancient artifact: the fabled Blue Stone of Heaven. Imbued with the unfathomable power to bestow its holder with immense strength, the statuette attracts corrupt Colonel Tatakombi, who, blind with greed, intends to spark an uprising, and turn the natives against Tarzan. Can mighty Tarzan avert the jungle rebellion?

An innocent, pregnant prison inmate (Shirley Knight) becomes the bad warden's (Andrew Duggan) personal favorite.

Reluctant New York City private eye P.J. Detweiler is hired as a bodyguard to protect Maureen Preble, the mistress of shady millionaire William Orbison. In truth, Orbison plans a deadly intrigue in which P.J. is to play a central part. Meanwhile, complications ensue as P.J. gradually falls in love with Maureen.

An American submarine leaves Tierra Del Fuego, and one of its crew has secretly brought aboard a container full of poisonous snakes which escape storage and bite key personnel on the submarine, causing an accident that cripples the vehicle so that it drops to the bottom of the Southern Ocean. Worse still, the snakes are still at large on the submarine and complicate the efforts of the crew to escape the sunken vessel.

Little coastal town is being terrorized by deadly Barracudas.

Dr. Bill Cortner and his fiancée, Jan Compton, are driving to his lab when they get into a horrible car accident. Compton is decapitated. But Cortner is not fazed by this seemingly insurmountable hurdle. His expertise is in transplants, and he is excited to perform the first head transplant. Keeping Compton's head alive in his lab, Cortner plans the groundbreaking yet unorthodox surgery. First, however, he needs a body.