Dave is temporarily reactivated into the military as a training officer. Intelligence has an enemy agent under surveillance and knows that her contact is in the unit Dave is training, but they don't know who the spy is. Dave must discover who the spy is to prevent his unit's ordered simulated attack on a nuclear power facility from becoming real.

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A woman, who identifies herself as a ""boring stenographer on vacation"", shows up at the houseboat with three thugs after her. After Sandy and Ken fend off the men, Sandy takes the woman for a drink -- and she promptly disappears on him. He's out to find out where the ""boring stenographer"" went and why men were tailing her.

A woman is on the run with $20,000 that was intended as a bribe. She hires Ken as a bodyguard to accompany her back to her hometown, unaware that the brother of the man the bribe is intended to free is on their tail.

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While preparing to leave a tiny hotel Ken finds a young woman passed out in the hall outside his room. He revives her and discovers she is carrying $45,000 ransom money for her abducted boyfriend. Ken, against his better judgment, decides to help her ""negotiate"" with the kidnappers because she is $5,000 short of their ransom demand -- and she keeps fainting.

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Ken is paid $2000 to meet a business executive in Fort Lauderdale. En route he is kidnapped by men posing as police officers. He escapes and arrives at the hotel to meet the businessman, discovering someone else posing as Ken Madison has already contacted the businessman.

A performer in a water ski show is blackmailing her former boyfriend. He will lose a multi-million dollar inheritance if he gets married before the age of 30, but she discovers he secretly got married to a rival in the water ski show. When the woman turns up dead, Cha Cha's nephew, who had an almost obsessive crush on her, is implicated in the murder.

Dave Thorne runs into an old girlfriend who turns out to be involved in a marital triangle that leads to attempted murder.

An ex-con moves to Miami from New York with his muscle man. No one believes he's gone straight, especially when a yacht club commodore turns up dead after denying him access to the yacht club.

A hated dictator, living in exile in Miami, is murdered during a birthday party for his son. Lt. Snedigar thinks he has an open-and-shut case against Pepe the Clown, who performed at the birthday party, but Pepe insists he was not at the party. Dave has to prove to the skeptical policeman someone else went to the party in Pepe's costume.

A former USO singer who knew Dave in Korea is trying to make a name for herself. To help, she gets a ""gimmick"" - $130,000 worth of jewelry to attract publicity. The ""gimmick"" indeed attracts publicity -- thieves, who rob the nightclub during the show.

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When Daphne is kidnapped on the way to a friend's wedding in Nassau, Sandy discovers the truth about the prospective groom.

A wealthy businessman hires Ken to look after his wild daughter. The girl is enamored with an ex-con who owes a crime boss $25,000. When the man turns up dead, she confesses to his murder.

A famous TV star's plans for a gala program coinciding with his wedding anniversary face a potential shipwreck when his wife tells him she wants a divorce. He hires Dave to look after her, presenting her as a ""nervous"" type who might try suicide. Dave believes there is something more sinister behind her ""emotional"" problems, centered around her husband's ego and political aspirations.

Sandy is hired to find an old acquaintance, the director of a lingere show. He encounters a number of romantic double-crosses. One member of the show entourage turns up dead, an apparent suicide, but Sandy thinks otherwise.

A drug store delivery boy borrows a formal jacket from Sandy for a prom. As he leaves the houseboat he is shot. Sandy thinks it was a case of mistaken identity and the bullets were meant for him.

As part of the latest scheme of a husband and wife con artist team the husband seeks to hire Ken, portraying his wife as cheating on him with the intended scam victim. Ken refuses to take the job because the man named is a friend and frequent client, but he becomes involved when a cohort of the couple turns up dead.

Dave is asked by a woman to find her missing husband. While investigating he discovers he's not the only one looking for the missing man -- and the woman who hired him isn't really the bride she claims to be.

Kevin Flanagan is a famous, profane novelist vacationing in Miami. He has a love of women and drink, which causes his wife to hire Dave as a bodyguard ""to protect him from himself"". Dave has much more to protect Kevin from: while on a drinking binge he witnessed a murder. The criminals are not sure whether Kevin's alcohol fog will allow him to remember what he saw, so they make arrangements to kill him.

Not realizing that he is being taken by a conman, Garibaldi Dinato pays a year's rent up front to lease the Surfside 6 houseboat as a new location for his Italian restaurant.

The small town of Green Bay doesn't like outsiders. One such outsider was acquitted of the murder of his father-in-law, although everyone still considers him guilty. Ken is hired by the man's wife to prove to the townsfolk that the man is indeed innocent.

When a beautiful starlet finds out she is adopted, her old friend Sandy tries to keep her from being duped by someone claiming to be her real mother.