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Point of No Return

Episode number: 1

Overview: Mike is trapped in a ""scubasphere"" when the cable attached to it snaps.

River Treasure

Episode number: 2

Overview: While surveying a remote river in the South American jungle, Mike is threatened by the jealousy of a man prospecting for emeralds with his wife.

The Destroyers

Episode number: 3

Overview: Mike investigates the source of a radar jamming signal that caused two ships to collide.

Vital Error

Episode number: 4

Overview: A famous newsman, convinced that he has a fatal illness, tries to end his life in such a way that his wife can collect his insurance, with Mike as a witness.

The Dancer

Episode number: 5

Overview: A scuba diving ballerina faces the possibility of underwater amputation when she catches her foot between the buckled plates of a sunken freighter.

Sperling of Lamatsue

Episode number: 6

Overview: After being accidentally caught in a fishing net, Mike challenges an Asiatic warlord by trying to retrieve a cache of medical supplies that the dictator has dumped into a river.

Rescue

Episode number: 7

Overview: Unaware that two of his treasure-hunting friends are trapped inside, Mike sets charges to blow up a sunken ship that is a menace to a busy shipping lane.

Mercy Trip

Episode number: 8

Overview: Mike scouts a path through mine-infested waters so that medical supplies can reach a China Sea port hit by a cholera epidemic.

Hot Tracer

Episode number: 9

Overview: Mike's efforts to retrieve a pair of radioactive cylinders are complicated by the presence of a headstrong youth to whom he's been giving diving lessons.

Sonar Story

Episode number: 10

Overview: Mike uses sonar to foil a gang of underwater heroin smugglers.

Amigo

Episode number: 11

Overview: A young Mexican boy helps Mike locate a safe entrance to an underwater fossil cave.

The Aquanettes

Episode number: 12

Overview: Mike faces sharks and other unexpected difficulties while working with three pretty women undergoing astronaut training.

Survival Kit

Episode number: 13

Overview: Mike is hired by a local German consul to salvage a survival kit from the wreckage of a Nazi warplane in the Caribbean.

Expedition

Episode number: 14

Overview: While helping his former history professor search for pirate treasure off the North Carolina coast, Mike finds evidence that the underwater cave said to house the treasure has been tampered with.

Bionics

Episode number: 15

Overview: Mike convinces a reluctant daughter to continue her father's work after he is killed testing an underwater electrical detection device.

The Defector

Episode number: 16

Overview: A man bribes Mike to continue giving lessons to an inept diving student whom he's stopped teaching.

Niko

Episode number: 17

Overview: Mike heads a three-man team in an effort to disarm a pair of unexploded torpedoes at the bototm of a West Coast harbor.

Cougar

Episode number: 18

Overview: A restless youth and a college girl complicate Mike's attempts at capturing a poisonous lionfish.

Sub Hatch

Episode number: 19

Overview: A heroic test pilot from the Korean War has his mettle tested when he must spend 24 hours with Mike in a makeshift decompression chamber after a dive to prevent the bends from killing him.

The Octopus Story

Episode number: 20

Overview: Markings on the body of a dead diver convince a marine biologist that a tropical lagoon is inhabited by a killer octopus.

Quicksand

Episode number: 21

Overview: One salvage diver disappears while diving on a sunken yacht off the coast of Yucatan, and Mike tries to see that two others don't share his fate.

Lost Island

Episode number: 22

Overview: Mike teams up with a Mexican prison escapee to uncover nefarious activity on an uncharted Pacific atoll off the coast of South America.

Baby

Episode number: 23

Overview: Mike must get past Jivaro Indians who are blocking his passage downriver as he attempts to get a young missionary's baby to a hospital for medical attention.

Confidential Mission

Episode number: 24

Overview: Mike poses as a tourist on vacation as he tries to locate a hidden underwater missile launcher in the Caribbean.

Underwater Pirates

Episode number: 25

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

The Meet

Episode number: 26

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

Dark Evil

Episode number: 27

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

Sunken Car

Episode number: 28

Overview: 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.

Hit and Run

Episode number: 29

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

The Saint Story

Episode number: 30

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

Impostor

Episode number: 31

Overview: 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.

Superman

Episode number: 32

Overview: 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.

Roustabout

Episode number: 33

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

P.T. Boat

Episode number: 34

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

Starting Signal

Episode number: 35

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

Skipper

Episode number: 36

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

Crime at Sea

Episode number: 37

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

Round Up

Episode number: 38

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