Jack Costello and his partner are faced with six new and exciting cases: at one stage our hero becomes involved in an international plot to kill a...

Jack Costello is a private detective in Miami and he finds out he is being followed by a man. He confronts him and finds out his name is Dumas. Dumas...

A scientist arrives in Miami on a ship coming from Cuba. Detectives Extralarge and Willy have been hired to protect him. The scientist, however, is...

Elizabeth is in a car with her boyfriend when suddenly she feels a pain in the stomach so strong she seizes a knife and stabs herself to death. Her...

Famous football player Long John is killed and the police believe that John was a heroin addict and that his murder is a punishment for something he...

Agent Blake finds the corpse of a child. It is one of a long chain. The murderer is called The Miami Killer by the newspapers. Extralarge assists the...

Burt meets Jack Costello after many years. Burt is a boxer and he is fleeing after a fixed match that he should have lost but instead he won. Then he...