Mike investigates a sunken freighter for an insurance company and to search for an earlier diver who never resurfaced. The salvage ship operator he hires to transport him wants the wreck all to himself. Not hesitating to kill again, he refills one of the air tanks with deadly carbon monoxide.
The police ask Mike for his thoughts on a man whose wife didn't resurface after photographing a shipwreck. The husband says she simply went deeper than she could handle. Examining the couple's photos, Mike realizes the man''s lying. To get a confession, Mike fools him into believing they can retrieve her body from 500 feet down.moreless
A radioactive knife and fish convince a pair of prospectors there's uranium underwater. They bring in Mike to scour the seabed with a Geiger counter and find the deposit. Rather than celebrating, one of the men becomes suspicious of his partner and Mike, convinced they're plotting to steal his claim.
Diving for sponges off of Florida, Mike hears bells as a fierce current tries to force him into a cave. He barely escapes death, but learns many other divers have met their demise after being lured in by an evil mermaid. Obsessed with solving the mystery, Mike is determined to dive again.moreless
Mike dives to see how a woman escapes from a locked truck at the bottom of a lake. Watching a near-tragedy underwater, he takes his concerns to Harry Baldwin, the head of the carnival show. The girl's life is placed in serious danger when Harry sabotages the trick in revenge for her falling in love with another man.moreless
While Mike is helping a friend test a new mini-submarine, the daughter of a Soviet scientist approaches him about rescuing her Father from behind the Iron Curtain. Mike turns her and the US government agent with her down flat. Later, though, Mike becomes a one man commando team, in the middle of the Pacific Ocean, when he boards an Eastern block ship. One additional issue is no one was able to tell her Father Mike is coming to spirit him to the West.moreless
While looking for a rare fish in the West Indies, the US Government loses the nose cone of a test ICBM missile. Can Mike find and recovery it before enemy agents find it or him?
After Mike turns down an offer to work with a pair of men who run a deep sea salvage company because of their past, Mike's assistant on his current job agrees to work for them. Mike joins the three men on a treasure hunt for gold, as Mike wants to keep his former young assistant safe from harm.moreless
While on job field testing a new device called a "Dual Sweep Transducer," common name fish-finder, Mike crosses path with a Mexican fishing village without fish, except for one man. Using the ship ("Sonar Queen") equipment, Mike finds the fish and then goes into sale mode to save the fisherman and sell the community on new technology.moreless
While working on a project to formulate a safety code for skin divers, Mike meets up with an old flame who has her own safety issues while skin diving. She is trying to combine skin diving with her job as a photographer, but needs a portfolio and wants Mike's help in shooting a sunken barge off the coast of Mexico. Her impatience brings both Mike and her to the brink of death.moreless
TV Rating: TV-G: A mysterious woman who's hired Mike for private diving lessons proves so inept that, after a week, Mike drops her, fearing she'll accidentally kill herself. Her motivation for the lessons becomes clear when an insurance investigator shows up; her boyfriend is doing time for a jewel heist and the loot is stashed 150 feet down.moreless
TV Rating: TV-G: The Immigration Department contacts Mike after he rescues a young woman from the ocean. Officials believe she is involved in smuggling foreign criminals into the states. After having her released into his custody, the tables are turned and Mike finds himself being held by the woman and her brother. They want to keep Nelson quiet until their other brother has safely slipped into the country.moreless
A mining company flies Mike 1,500 miles inland to survey a collapsed and partly flooded mine. They're trying to decide the best way to reopen the mine. During his first dive, Mike hears noises that lead him to an air pocket where two men barely are surviving. One of the miners feels there is only enough air left in the cave for 10, maybe 20 minutes. Mike has only enough air to take one of the miners out. Who will go with Mike? Who stays and hopes (with only one miner breathing the air) he'll be able to survive until Mike returns? How will they decide who lives and who risks death?moreless