Episode 1
The Alcatraz Story
Jan 4, 1959
Mike trains three brothers in the use of scuba gear, unaware that they plan to break a fourth sibling out of Alcatraz.
Episode 2
Operation Greenback
Jan 11, 1959
Mike unwittingly shares his explosives expertise with an old navy buddy who is planning an underwater bank heist.
Episode 3
Underwater Security
Jan 18, 1959
While testing the coastal security of a rocket fuel plant, Mike discovers a pair of saboteurs.
Episode 4
Underwater Labyrinth
Jan 25, 1959
Mike is hired to retrieve a new guided-missile tracking device from a test boat sunk during a Florida hurricane, but finds that underwater thieves have beaten him to the punch.
Episode 5
Monte Cristo
Feb 1, 1959
As consultant on a remake of The Count of Monte Cristo, Mike finds that the emotions of the star and his stand-in may lead to disaster in the execution of a stunt.
Episode 6
The Stunt
Feb 8, 1959
An overconfident swimming champion endangers both herself and Mike when she challenges him to an underwater race to Catalina.
Episode 7
Diving for the Moon
Feb 15, 1959
Mike and a group of astronauts-in-training are stranded on the seabed when a hurricane blows their boat away.
Episode 8
The Search
Feb 22, 1959
Mike comes to the rescue of a scuba diver who has been trapped in a kelp bed while spear fishing.
Episode 9
Jettisoned
Mar 1, 1959
Mike races to recover a ditched nuclear warhead before sea water corrodes the casing.
Episode 10
Murder at 60 Feet
Mar 8, 1959
A man planning to murder his wife hires Mike to teach her to scuba dive so that he may lure her into a dangerous underwater current.
Episode 11
Air Pockets
Mar 15, 1959
Mike is hired to dive on a sunken freighter in New York Harbor in the hopes that some crew members may still be alive in air pockets.
Episode 12
The Dam
Mar 22, 1959
While checking the underwater security of a new dam, Mike discovers a bomb that has been placed in an intake valve.
Episode 13
Dock Fire
Mar 29, 1959
In an effort to prevent a dock fire from igniting chemicals stored in a warehouse, Mike swims into the building through an intake pipe.
Episode 14
The Persuaders
Apr 5, 1959
Drug smugglers force Mike at gunpoint to help them retrieve a sunken shipment of narcotics.
Episode 15
Nerve Gas
Apr 12, 1959
After discovering a sunken Japanese submarine, the amateur skin diver who found it goes violently berserk.
Episode 16
Strange Salvage
Apr 19, 1959
Mike investigates the deaths of a pair of divers who were murdered after discovering a sunken yacht laden with jewels.
Episode 17
Underwater Survey
Apr 26, 1959
While looking into the possibility of linking two Latin American lakes by a canal, Mike runs afoul of rebel guerillas.
Episode 18
Underwater Curtain
May 3, 1959
Mike discovers a submarine off the Panama coast that is a base of operations for divers planning to destroy the Panama Canal.
Episode 19
Hermes
May 10, 1959
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
The Briefcase
May 17, 1959
A man tricks a scientist into dropping a top-secret folio overboard, where a confederate can retrieve it.
Episode 21
Cave Diving
May 24, 1959
Mike attempts to rescue a geologist who has been trapped in an underwater cave by a sudden landslide.
Episode 22
Water Ski Show
Jul 1, 1959
Mike investigates the mysterious death of the featured performer in a water ski show during the act's underwater finale.
Episode 23
Underwater Shrine
Jun 7, 1959
Mike and a pair of archaeologists risk the anger and booby traps of islanders while exploring underwater caves in the Caribbean.
Episode 24
Chain of Evidence
Jun 14, 1959
Latin American revolutionaries recruit Mike to recover the body of their murdered leader from the palace lagoon in order to ignite an uprising.
Episode 25
Treasure Hunt
Jun 21, 1959
A young skindiver is found murdered after stealing lobsters from an elderly fisherman as an initiation stunt.
Episode 26
Sea Serpent
Jun 28, 1959
Mike defies tales of a mysterious sea serpent when he searches for a shipment of stolen liquid explosives in Arabia.
Episode 27
The Getaway
Jul 5, 1959
After one of their number is wounded in the robbery of a beach side casino, a team of thieves kidnap a doctor's wife in order to lure the physician into a trap.
Episode 28
Underwater Ejection
Jul 12, 1959
A freak accident endangers a man's life during the test of Mike's new method of retrieving sunken ICBM nose cones.
Episode 29
The Female
Jul 19, 1959
A beautiful woman plots revenge against Mike after flunking out of his class for scuba diver instructors.
Episode 30
Port Security
Jul 26, 1959
Mike tries to break a ring of drug traffickers who are smuggling heroin into the country in ballast tanks.
Episode 31
Underwater Park
Aug 2, 1959
Someone attempts to kill Mike while he's scouting out a site for an underwater marine preserve.
Episode 32
Underwater Unit
Aug 9, 1959
Mike is recruited to train a pair of divers for an urgent secret assignment.
Episode 33
Proof of Guilt
Aug 16, 1959
Mike uses an underwater TV camera setup to nab thieves who are robbing a Hawaiian girl's pearl beds.
Episode 34
Chained
Aug 23, 1959
Mike stands by to assist an undercover man in his assignment to infiltrate an illegal alien-smuggling ring.
Episode 35
Ransom
Aug 30, 1959
A husband-wife team steal and then ransom some computer tapes necessary to a plant's operations.
Episode 36
Oil Island
Sep 6, 1959
A careless salvage diver is trapped on the deck of a sunken freighter by some lead cable.
Episode 37
Base of Operations
Sep 13, 1959
A husband and wife team of photojournalists ignore Mike's warnings about diving on a sunken ocean liner and are imperiled by the pressures of the deep.
Episode 38
Kelp Forest
Sep 20, 1959
A coastal fisherman wages a private war against kelp harvesters, blaming them for ruining the fishing grounds necessary to his livelihood.
Episode 39
The Raft
Sep 27, 1959
Mike dives onto a sunken freighter loaded with nitro, planning to detonate the cargo before it drifts away into the shipping lanes.
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