After discovering his office has been ransacked, Mike receives a threatening phone call ordering him off "the case" and to drop his client, Sharon O'Closkey. Mike refuses, even though he wasn't working on a case and didn't have a client named O'Closkey. When the mysterious client calls and invites the private investigator to her room, Mike quickly agrees, only to fall victim to drugged meal. When he awakens, he discovers he's in Las Vegas and his beautiful client claims he flew to Nevada willingly to help her find her missing father.

While eating in a hotel restaurant, Mike spots a man take a package from a woman's table. Even though the package contains a necklace with a broken clasp as the man claimed, Mike smells foul play and traces the woman who left the box. When he arrives at her house, he learns that she was pushed down her stairs and badly injured. Investigating further, he discovers she is the victim of a vicious blackmailer.

A nightclub singer asks Mike to get her out of a contract that's held by a mobster. The man claims the rising star who she owes him $50,000 "for expenses" plus 30% of her salary in perpetuity. While Mike is working on the contract, the singer receives a blackmail threat. Mike tries to retrieve the indiscreet photograph, he finds the blackmailers dead and the negative gone.

While waiting for his car to be repaired at a friend's combination garage/used car lot, Mike gets involved with three unsavoury characters who are very interested in a Jaguar sports car that has bullet holes in the back of the driver's seat with blood stains to match.

Mike runs into an old acquaintance, the wife of an embezzler he helped send to prison, who asks for her help. When she turns up dead in her apartment, rather than in his office as scheduled, Mike investigates. He's curious why a blue-blooded lady should arrange to bury the wife of a convict and discovers that both women are involved in a shady escort service dabbling in blackmail.

Mike is asked to help a popular disk jockey who's been threatened by a powerful music producer to play her performers' songs or else. While Mike is trying to persuade the producer to back off, the disk jockey is brutally beaten, and Mike is fired as a result. When the DJ collapses from the injuries he's sustained, Mike decides he's been rehired and takes after the producer and her goons with a vengeance.

Working for the insurance company, Mike assists the police investigate an armed robbery of an armored car company. His investigation reveals that the sister of a crippled friend who only helped the hold-up gang because of the beatings they had given her brother. Mike can't capture the thieves without implicating the young woman.

Mike is hired to track down a man's missing girlfriend. The client tells Hammer that he just returned from South America, but his pasty complexion belies his claim of three years in the tropics. Hammer learns that the man is really an ex-con out on parole. Mike can understand his client hiding his criminal past, but what he really can't understand is why a powerful television anchor like Butler Tilton would hire an inept private eye like Andy Anderson to tail the former bank robber.