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39 Episodes 1959 - 1959
Episode 1
Sun, Jan 4, 195930 mins
Three brothers pose as abalone fishermen and hire Mike to teach them to use scuba gear. Mike becomes suspicious, trails the siblings, and discovers their real reason for wanting to learn to dive; they have an ingenious plan to help a fourth brother escape from Alcatraz Island prison.
Episode 2
Sun, Jan 11, 195930 mins
Mike unwittingly becomes involved in the preparation of an underwater bank robbery.
Episode 3
Sun, Jan 18, 195930 mins
Mike battles saboteurs, while conducting an underwater security check for a rocket fuel plant.
Episode 4
Sun, Jan 25, 195930 mins
Mike battles spies in an underwater maze of caves.
Episode 5
Sun, Feb 1, 195930 mins
Mike signs on as tech adviser to a movie company filming yet another version of The Count of Monte-Cristo. The director wants to shoot the underwater escape of Edmond Dantes from the Chateau d'If on location - in the sea. But the reckless leading man wants to do his own stunt - a stunt that no one has ever done before. Inventing the stunt and setting up the safety precautions are actually the simplest part. What makes matters worse is that the star's stand-in has a jealous streak several fathoms deep. Can Mike trust the stand-in? Will the brash leading man survive, or will this be his last shoot?
Episode 6
Sun, Feb 8, 195930 mins
A woman, who is willing to do anything she can to win, challenges Mike to an underwater race, as a publicity stunt.
Episode 7
Sun, Feb 15, 195930 mins
Mike Nelson is called in on a space project and commissioned to experiment underwater with four top candidates for space travel.
Episode 8
Sun, Feb 22, 195930 mins
Mike Nelson and three of his students search for a missing diver, who was dragged deep below the surface by a large fish that he speared.
Episode 9
Sun, Mar 1, 195930 mins
Mike conducts an emergency covert search in foreign waters to recover a nuclear warhead ditched by a U.S. Air Force plane. A local fishing boat interferes.
Episode 10
Sun, Mar 8, 195930 mins
A beautiful millionairess who was crippled by a mountain climbing accident has her husband and doctor recommend scuba diving as therapy for her legs. Nelson is hired to work with her. The husband has an ulterior motive and it involves the strong currents at 60 feet below Drakes Head on the Pacific Coast.
Episode 11
Sun, Mar 15, 195930 mins
Mike conducts a desperate search for survivors soon after a freighter sinks to the bottom of a river in the city of New York. He finds two trapped men and a dog named Tiger surviving in an air pocket. He must quickly find a way to save the men - and Tiger, too.
Episode 12
Sun, Mar 22, 195930 mins
Mike investigates sabotage of a turbo-electric dam located in a desert area of a small country.
Episode 13
Sun, Mar 29, 195930 mins
Mike takes on a possible suicide mission, when he agrees to swim with a fire hose through an underwater intake pipe into a burning warehouse filled with combustible chemicals.
Episode 14
Sun, Apr 5, 195930 mins
Nelson passing on an invitation to enjoy a break at Catalina Island instead decides to do some needed maintenance work on his boat. However,he is "hired" at gunpoint to retrieve narcotics 60 feet down on the lee side of Rogers Island. Certain he will be killed upon completing the job, Nelson tries to figure a way out.
Episode 15
Sun, Apr 12, 195930 mins
After discovering a lost WWII submarine a scuba diver has a violent seizure. His wife radios for help and Nelson and a friend respond. After giving resuscitation Nelson also has a seizure. Upon recovering Nelson is told that a nerve gas may be leaking from the submarine. He agrees to return to the submarine to verify the danger.
Episode 16
Sun, Apr 19, 195930 mins
Mike helps the police investigate the apparent murders of two divers who were searching for a sunken yacht full of treasure.
Episode 17
Sun, Apr 26, 195930 mins
While looking into the possibility of linking two Latin American lakes by a canal, Mike runs into a group of rebel guerillas.
Episode 18
Sun, May 3, 195930 mins
While on a research project, Mike encounters saboteur frogmen attempting to destroy the Panama Canal.
Episode 19
Sun, May 10, 195930 mins
A Greek sponge diver and his pretty girlfriend lay a minefield for Mike, fearful that he will interfere with their discovery of a valuable statue on the Mediterranean seabed.
Episode 20
Sun, May 17, 195930 mins
Mike searches for a diver who has just stolen a briefcase filled with top secret papers.
Episode 21
Sun, May 24, 195930 mins
Nelson is hired to assist a Geology Professor who has found uranium deposits in an underwater cave. As Nelson is about to enter the cave,a freak underwater landslide traps the professor. Nelson races against time to clear the entrance way. An old WWII Seabee's idea about a "gopher" might provide a solution.
Episode 22
Sun, May 31, 195930 mins
A champion water-skier drowns during the finale of a water show.
Episode 23
Sun, Jun 7, 195930 mins
Mike takes a husband and wife archaeologists on a cave dive.
Episode 24
Sun, Jun 14, 195930 mins
While on a diving assignment in a foreign country, Mike Nelson unwillingly becomes involved in proving that the country's military ruler is guilty of murdering a member of the opposition party.
Episode 25
Sun, Jun 21, 195930 mins
Shortly after a skin diver steals lobsters from an old fisherman as part of a secret club initiation, he disappears. Mike Nelson finds his spear gun near the lobster pots and the fisherman is accused of murder.
Episode 26
Sun, Jun 28, 195930 mins
Mike is recruited to search for hidden stolen liquid explosives.
Episode 27
Sun, Jul 5, 1959
Mike attempts to rescue a kidnapped friend.
Episode 28
Sun, Jul 12, 195930 mins
When a nosecone's capsule fails to eject after landing in the ocean, Mike attempts to locate it and rescue the scientist trapped inside.
Episode 29
Sun, Jul 19, 195930 mins
A female diving student plots revenge after Mike kicks her out of his diving class.
Episode 30
Sun, Jul 26, 195930 mins
Mike Nelson is on assignment to locate narcotics hidden below the waterline of vessels in the harbor.
Episode 31
Sun, Aug 2, 195930 mins
While conducting a visual and photographic survey for a State underwater park, Mike becomes a target for murder.
Episode 32
Sun, Aug 9, 195930 mins
Mike takes part in a daring rescue mission of a woman held prisoner by foreign forces.
Episode 33
Sun, Aug 16, 195930 mins
Mike risks his life to catch pearl thieves off the coast of Hawaii.
Episode 34
Sun, Aug 23, 195930 mins
Mike helps to bust up a murderous alien-smuggling ring.
Episode 35
Sun, Aug 30, 195930 mins
Mike gets involved in recovering stolen six valuable computer memory tapes, which are being held for ransom.
Episode 36
Sun, Sep 6, 195930 mins
Mike attempts to free a salvage diver trapped under a tremendously heavy piece of deck cargo.
Episode 37
Sun, Sep 13, 195930 mins
Mike attempts to rescue a couple inexperienced divers from the deep.
Episode 38
Sun, Sep 20, 195930 mins
A deep sea fisherman and his son arm and plant a World War II mine in an attempt to destroy a kelp harvester.
Episode 39
Sun, Sep 27, 195930 mins
Mike takes on a dangerous mission: Detonating explosives that are stored inside a sunken ship.