S3 E1 • Asylum

Working for the State Department, Mike attempts to rescue a political prisoner in South America by using a harbor city's canal system.

Première diffusion : 9 janvier 1960

S3 E2 • Water Nymphs

A swimsuit designer hires Mike to do an underwater fashion shoot, but corporate espionage interferes with the job.

Première diffusion : 16 janvier 1960

S3 E3 • Mister Big

Mike attempts to deal a blow to organized crime by using a periscope camera to photograph a secret meeting of mob bosses at a lakeside estate.

Première diffusion : 23 janvier 1960

S3 E4 • Hot Cargo

Mike finds high radiation coming from the hull of a foreign freighter, but when the Coast Guard investigates, they find no trace of the radioactivity.

Première diffusion : 30 janvier 1960

S3 E5 • Underwater Drop

An accidental death puts Mike onto an espionage ring that is using an underwater cave for a microfilm drop site.

Première diffusion : 6 février 1960

S3 E6 • Cobalt Bomb

Mike and a female health official try to remove a dangerously radioactive capsule from a sunken ship.

Première diffusion : 13 février 1960

S3 E7 • Counterfeit

Mike, working with a pretty Secret Service agent, poses as a scientist in order to retrieve a cache of counterfeit currency from a crashed Nazi plane off the coast of a Caribbean republic.

Première diffusion : 20 février 1960

S3 E8 • Missile Watch

Mike finds that someone has tapped the underwater cable used in monitoring a televised missile test.

Première diffusion : 27 février 1960

S3 E9 • Jade Cavern

Mike rescues a diver in the Bahamas, then helps her with her research into the origin of a jade statue she owns.

Première diffusion : 5 mars 1960

S3 E10 • Expatriate's Return

While on patrol with the Coast Guard Auxiliary, Mike discovers a deported crime boss trying to re-enter the country, then has to rescue him from some old enemies.

Première diffusion : 12 mars 1960

S3 E11 • Strong Box

Mike leads the way in a salvage operation to recover more than a million dollars' worth of gems from the captain's safe of a sunken ship.

Première diffusion : 19 mars 1960

S3 E12 • The Fearmakers

In preparation for the visit of a foreign head of state, Mike helps the Coast Guard do a security check on the area.

Première diffusion : 26 mars 1960

S3 E13 • Revolutionary Spoils

A new revolutionary leader asks Mike to help him retrieve his country's hidden gold reserves, believed to have been hidden aboard a scuttled freighter by the ousted former dictator.

Première diffusion : 2 avril 1960

S3 E14 • Pirate Gold

While marking underwater sites for demolition by a construction company, Mike learns that a young boy is trapped in a submerged grotto that has already been mined with an explosive.

Première diffusion : 9 avril 1960

S3 E15 • The Living Fossil

While supervising an expedition in the Indian Ocean to find a rare coelacanth fish, Mike finds that the organizer is dangerously eager to impress his fiance.

Première diffusion : 16 avril 1960

S3 E16 • Submarine Explosion

Scientists risk triggering a tidal wave when they ignore Mike's warnings about the strength of the explosive charges they're using.

Première diffusion : 23 avril 1960

S3 E17 • Sacred Pool

Mike faces arrows and an alligator in the Mayan jungle while searching for a drug that could be a boon to medicine or a dangerous narcotic.

Première diffusion : 30 avril 1960

S3 E18 • Cindy

Mike tries to reach a little girl trapped in the air shaft of a mine located at the edge of a man-made lake, but the potential for a landslide hampers his attempt.

Première diffusion : 7 mai 1960

S3 E19 • Cross Current

Mike searches for a vanished oceanographer by retracing her charted course.

Première diffusion : 14 mai 1960

S3 E20 • Synthetic Hero

Mike discovers the wreck of a navy ship that disappeared mysteriously, and is joined by a pair of its former crew members when he dives to examine it.

Première diffusion : 21 mai 1960

S3 E21 • The Cellini Vase

Mike becomes suspicious when his hired dive on a Spanish galleon yields a rare art treasure.

Première diffusion : 28 mai 1960

S3 E22 • Target

While diving in Lake Ontario, Mike is sent by the Coast Guard to investigate an item that crashed into the lake nearby, which may be an enemy ICBM.

Première diffusion : 4 juin 1960

S3 E23 • Ghost Light

An East Indian oceanographer vanishes during a series of underwater experiments with infra-red light.

Première diffusion : 11 juin 1960

S3 E24 • Rebreather

Mike and an old war buddy use a new, untested ""re-breather"" to investigate an underwater missile site being constructed in the channel of a privately-owned island.

Première diffusion : 18 juin 1960

S3 E25 • Blind Spot

Mike helps a friend in the military with his tests of underwater radar equipment.

Première diffusion : 25 juin 1960

S3 E26 • The Replacement

Mike straightens out a pair of teenagers who poisoned a shark Mike had captured for Marineland.

Première diffusion : 2 juillet 1960

S3 E27 • Underwater Beacon

While helping to test a friend's underwater radio device, Mike discovers a submerged radio beacon, camouflaged and guarded by an electric gun.

Première diffusion : 9 juillet 1960

S3 E28 • Time Fuse

A small Latin American country calls upon Mike to help defuse a sunken munitions ship set to blow by saboteurs.

Première diffusion : 16 juillet 1960

S3 E29 • Storm Drain

Mike goes after a newlywed teenager turned fugitive after a bungled holdup prompts him to hide in the city's storm drain system.

Première diffusion : 23 juillet 1960

S3 E30 • The Invader

Mike trains a pair of frogmen for a rescue mission in which they will rescue their kidnapped president from an ancient fortress.

Première diffusion : 30 juillet 1960

S3 E31 • Changing Patterns

When Mike is called upon to teach scuba diving to his former mentor who trained him in helmet diving, he finds that the older man is not physically up to it.

Première diffusion : 6 août 1960

S3 E32 • The Catalyst

The Coast Guard asks Mike to investigate the drowning death of a scientist who had invented a new type of rebreather.

Première diffusion : 13 août 1960

S3 E33 • The Missing Link

A scientific society hires Mike to obtain fossil samples from a newly-discovered underwater cavern for the purpose of authentication.

Première diffusion : 20 août 1960

S3 E34 • Underwater Narcotics

Mike discovers a plant growing profusely on the ocean floor that turns out to be a hybrid cannabis, and he is speared when he investigates further.

Première diffusion : 27 août 1960

S3 E35 • The Sound of Nothing

Mike is sent by the government to investigate a jamming signal affecting a listening station in the Indian Ocean.

Première diffusion : 3 septembre 1960

S3 E36 • Prima Donna

Another movie company using Mike as an advisor needs his help when a planned torpedo blast traps the star and a Hollywood columnist onboard a sinking ship.

Première diffusion : 10 septembre 1960

S3 E37 • Beyond Limits

Mike races foreign agents to a missile fired from Central Asia in order to photograph it on the sea bottom and obtain its data recorder.

Première diffusion : 17 septembre 1960

S3 E38 • Diplomatic Pouch

Mike tries to outmaneuver a foreign harbormaster as he attempts to retrieve a diplomatic pouch from an airliner that crashed into the sea.

Première diffusion : 24 septembre 1960

S3 E39 • Man Overboard

Mike responds to a ""man overboard"" situation, but an extensive search turns up no victim.

Première diffusion : 1 octobre 1960