A troubled scientist's accidental overexposure to gamma radiation curses him with the tendency to change into a bestial green brute under extreme emotional stress.

David meets a young woman who can't walk. He gets work on her family's ranch and discovers her doctor is slowly poisoning her. After he reports his suspicions to the girl's mother he finds himself the target of a vicious manhunt.

David 'Benson' is saved from a couple of muggers by a boxer nicknamed 'Rocky' and becomes his friend and corner-man. Unfortunately the young man suffers from high blood pressure and is being used to ferry drugs by an unscrupulous manager.

David 'Bradburn' is researching control methods for animal aggression with a female doctor at a zoo. She gets into trouble when new animals keep dying from a mysterious illness.

David "Blake" is working at an arcade in Times Square, where everybody pays off "Uncle Jason". David finds out two elderly men are planning to take matters into their own hands.

David 'Brown' is flying from San Francisco to Chicago only to find out some of the crew are plotting to steal the Egyptian artifacts on board.

David is working as a card shill in Vegas when he learns his Casino owning boss is crooked. To complicate matters, the people holding the evidence are acquaintances of Jack McGee.

While hitchhiking, Banner is picked up by a young woman desperate to get her rig back from the men who stole it from her.

David 'Barnard' subjects himself to an experimental DNA test but finds out his doctor's accomplices are gathering newborn babies for similar research.

Banner uses forged documents to take the place of safety inspector Robert Patterson in order to get access to Gamma ray inversion equipment at a power plant when an earthquake hits.

David 'Barton' works in the kitchen of a tavern on the waterfront and helps the young widow who owns it to fight pushy union men.