Season 3

01 Asylum Episode 19th January 1960 Working for the State Department, Mike attempts to rescue a political prisoner in South America by using a harbor city's canal system. 02 Water Nymphs Episode 216th January 1960 A swimsuit designer hires Mike to do an underwater fashion shoot, but corporate espionage interferes with the job. 03 Mister Big Episode 323rd January 1960 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. 04 Hot Cargo Episode 430th January 1960 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. 05 Underwater Drop Episode 56th February 1960 An accidental death puts Mike onto an espionage ring that is using an underwater cave for a microfilm drop site. 06 Cobalt Bomb Episode 613th February 1960 Mike and a female health official try to remove a dangerously radioactive capsule from a sunken ship. 07 Counterfeit Episode 720th February 1960 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. 08 Missile Watch Episode 827th February 1960 Mike finds that someone has tapped the underwater cable used in monitoring a televised missile test. 09 Jade Cavern Episode 95th March 1960 Mike rescues a diver in the Bahamas, then helps her with her research into the origin of a jade statue she owns. 10 Expatriate's Return Episode 1012th March 1960 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. 11 Strong Box Episode 1119th March 1960 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. 12 The Fearmakers Episode 1226th March 1960 In preparation for the visit of a foreign head of state, Mike helps the Coast Guard do a security check on the area. 13 Revolutionary Spoils Episode 132nd April 1960 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. 14 Pirate Gold Episode 149th April 1960 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. 15 The Living Fossil Episode 1516th April 1960 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. 16 Submarine Explosion Episode 1623rd April 1960 Scientists risk triggering a tidal wave when they ignore Mike's warnings about the strength of the explosive charges they're using. 17 Sacred Pool Episode 1730th April 1960 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. 18 Cindy Episode 187th May 1960 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. 19 Cross Current Episode 1914th May 1960 Mike searches for a vanished oceanographer by retracing her charted course. 20 Synthetic Hero Episode 2021st May 1960 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. 21 The Cellini Vase Episode 2128th May 1960 Mike becomes suspicious when his hired dive on a Spanish galleon yields a rare art treasure. 22 Target Episode 224th June 1960 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. 23 Ghost Light Episode 2311th June 1960 An East Indian oceanographer vanishes during a series of underwater experiments with infra-red light. 24 Rebreather Episode 2418th June 1960 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. 25 Blind Spot Episode 2525th June 1960 Mike helps a friend in the military with his tests of underwater radar equipment. 26 The Replacement Episode 262nd July 1960 Mike straightens out a pair of teenagers who poisoned a shark Mike had captured for Marineland. 27 Underwater Beacon Episode 279th July 1960 While helping to test a friend's underwater radio device, Mike discovers a submerged radio beacon, camouflaged and guarded by an electric gun. 28 Time Fuse Episode 2816th July 1960 A small Latin American country calls upon Mike to help defuse a sunken munitions ship set to blow by saboteurs. 29 Storm Drain Episode 2923rd July 1960 Mike goes after a newlywed teenager turned fugitive after a bungled holdup prompts him to hide in the city's storm drain system. 30 The Invader Episode 3030th July 1960 Mike trains a pair of frogmen for a rescue mission in which they will rescue their kidnapped president from an ancient fortress. 31 Changing Patterns Episode 316th August 1960 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. 32 The Catalyst Episode 3213th August 1960 The Coast Guard asks Mike to investigate the drowning death of a scientist who had invented a new type of rebreather. 33 The Missing Link Episode 3320th August 1960 A scientific society hires Mike to obtain fossil samples from a newly-discovered underwater cavern for the purpose of authentication. 34 Underwater Narcotics Episode 3427th August 1960 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. 35 The Sound of Nothing Episode 353rd September 1960 Mike is sent by the government to investigate a jamming signal affecting a listening station in the Indian Ocean. 36 Prima Donna Episode 3610th September 1960 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. 37 Beyond Limits Episode 3717th September 1960 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. 38 Diplomatic Pouch Episode 3824th September 1960 Mike tries to outmaneuver a foreign harbormaster as he attempts to retrieve a diplomatic pouch from an airliner that crashed into the sea. 39 Man Overboard Episode 391st October 1960 Mike responds to a ""man overboard"" situation, but an extensive search turns up no victim.