Seasons & episodes

Pirates try to snatch a sunken freighter away from Mike before he can salvage it for an old Navy buddy.

While working for the U.S. Treasury to break a counterfeiting ring, Mike intercedes in a kidnapping.

A pretty woman and her father, vacationing in the Bahamas, become killers after inadvertently eating a variety of fish that causes hallucinations.

A sunken truck points Mike to the murder of a political boss, and the killer is the father of a good friend of Mike's.

Mike goes after an egocentric movie star who injured a friend of Mike's in a hit-and-fun speedboat accident.

While searching a Latin American harbor for a sunken statue, Mike discovers a UHF homing beacon being used to guide submarines into the port.

A dead ringer for Mike is stealing diamonds from a sunken sports cruiser, but when Mike is accused of the crime, he is unable to establish an alibi due to his current top-secret mission.

While on a diving expedition in Guatemala, a woman seeking to slow down her husband's frantic lifestyle deliberately sinks the boat they share, unaware that her husband is a diabetic and his insulin supply will be lost with the vessel.

Mike's assistant is trapped underwater by an overturned truck containing drums of poison that could endanger a South American city's water supply.

Mike helps test a remote control guidance device invented by a rich eccentric.

A naval officer of a Caribbean nation is sabotaging a series of experiments Mike is conducting with the Coast Guard.

During hydroplane races, a friend of Mike's rams his craft into a Coast Guard ship, leaving Mike to investigate.

Mike helps the daughter of his old UDT Commander investigate the man's death, which she believes was murder.

Mike must find and disarm a torpedo that's been sent into the outflow tube of a hydro-electric plant.