"What type of skulduggery is the Master Mind contemplating this time?" That is the question put to Jimmy Strange by his long-suffering girlfriend, Sandra. But the answer always depends on which type of criminals Jimmy is pitting his wits against. Whether they are poisoners, gunmen, murderers, drug dealers, or jewel thieves, they are all operating, untouched, outside the law -- until Jimmy enters the scene. And he is not averse to using their own methods against them...