A ex-cop now private investigator murders a man who stole jewels and takes the jewels himself. Pete and Frank help the cops by linking the murder and the jewels to the private investigator.

The treasurer of a retirement home takes the money and runs away to Brazil. The owner asks Pete and Mac to get the money back or the home will be shut down and the residents will have no place to go. Since the man can't be extradited . Mac and Pete decide to get him to give up the money by pretending to have a diamond mine they want to sell.