Season 1

January 4, 1958

Mike tries to free the pilot of a downed jet from his watertight cockpit before his air runs out, without causing the man's death from the water pressure.

January 11, 1958

While investigating the cause of a mine flood that killed thirty men, Mike stumbles upon an air pocket with two survivors.

January 25, 1958

A grudge between two divers whom Mike is testing for underwater mining skills becomes a secondary issue when one of them contracts nitrogen narcosis.

February 1, 1958

Before Mike can investigate the disappearance of a pair of skin-diving geologists, one turns up dead on the beach bearing marks resembling the suction valves of a giant octopus.

February 8, 1958

Mike helps the Immigration Department Border Patrol break up an underwater border-running operation.

February 15, 1958

A beautiful woman hires Mike to give her diving lessons for mysterious reasons.

February 22, 1958

An attractive magazine photographer hires Mike to assist her in getting pictures of a sunken barge off the coast of Mexico.

March 1, 1958

Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared.

March 8, 1958

A pair of ruthless treasure hunters dupes a young skin diver into helping them loot a sunken ship.

March 15, 1958

Mike dives into the Caribbean to recover the lost nose cone from an ICBM rocket before enemy agents can get it.

March 22, 1958

A killer whale is capsizing boats and endangering scuba divers and swimmers along a stretch of coastline.

March 29, 1958

Mike plays commando in rescuing a scientist who had defected from Soviet kidnappers who are returning him to Moscow aboard a Pacific liner.

April 5, 1958

Mike and two cameramen are imperiled when an irrationally jealous man drops their camera cage into shark-infested waters.

April 12, 1958

Mike competes with a pair of helmet divers to salvage a German submarine sunk off the coast of South America.

April 19, 1958

A man claims to have invented a machine that can locate ships carrying gold.

April 26, 1958

Mike is nearly killed by a massive electrical jolt used by a poacher to kill fish in the Florida Everglades.

May 3, 1958

Mike comes to the aid of a female escape artist when her underwater stunt goes awry.

May 10, 1958

Mike interrupts an underwater survey in the Gulf of Mexico in order to save a diver whose air line has become snarled.

May 17, 1958

Mike supervises a diamond diving expedition in South America, but discovers that his employers are poaching on someone else's property.

May 24, 1958

A vicious alligator escapes from a wild animal show and takes refuge in the lake of a public park.

May 31, 1958

An entire Mexican town is menaced by the presence of a derelict floating mine in its harbor that could ignite fumes from the local nitrate factory if it is detonated.

June 7, 1958

The State of Florida hires Mike to organize and train an underwater police force to deal with a series of underwater crimes.

June 14, 1958

Mike investigates an underwater grotto said to feature a mermaid that lures men to their deaths.

June 21, 1958

A professor and his daughter hire Mike to help them search for a rare underwater plant in Costa Rica.

June 28, 1958

A pair of prospectors hire Mike to trace the source of radioactive fish with a Geiger counter in hopes of finding a uranium deposit.

July 5, 1958

Mike is hired by a playboy sportsman to supervise their underwater shark ""safari"" in the waters off Peru.

July 12, 1958

Mike finds a famous rocket scientist being held in an underwater prison by enemy agents.

July 19, 1958

A frustrated former athlete pushes his children to be Olympic swimmers, resulting in their becoming trapped in a cave by a rising tide.

July 26, 1958

Mike leads a diving team in rescuing a Latin American diplomat and his family from kidnappers.

August 2, 1958

Mike and three other survivors share a life raft after a storm capsizes their boats.

August 9, 1958

Mike's work on a movie prompts a fellow stunt diver to attempt a dangerous record-setting dive.

August 16, 1958

After locating a leak in a gas line and retrieving a young boy's sunken bicycle, Mike is beaten up and threatened by a gang of thugs.

August 23, 1958

An underwater camera holds the key to determining whether a woman's drowning was accidental, as her husband claims, or not.

August 30, 1958

Mike is hired to destroy an underwater offshore peak that is notorious for ripping the hulls out of passing ships.

September 6, 1958

A group of sportsmen hire Mike to supervise their skin-diving outing, whereupon one of them sneaks off and begins photographing secret Navy facilities.

September 13, 1958

Mike is hired by an insurance company to investigate the sinking of a freighter, but a murder indicates that someone doesn't want him to complete his task.

September 20, 1958

Mike investigates reports of a sea monster off the coast of Mexico.

September 27, 1958

The murder of a telephone company employee leads Mike to an underwater cable that is being tapped to access top-secret research Conferences.

October 4, 1958

Mike discovers an important manganese deposit, but an ambitious young geologist, sharks, and an approaching hurricane threaten to silence him before he can inform the government.