Debut: In the premiere episode a man (Chris Robinson) seeking to steal a new invention by Primus' sidekick is thwarted when his two man sub gets trapped when... read more
While studying ocean life off the island of Mangaya, Primus is precipitated into the quicksands of political intrigue. While investigating the disappearance ... read more
Routine bank robbers plot with a new twist: the getaway is planned on a submarine. A former employee of Primus pulls a bank robbery then tries to steal his s... read more
An underwater narcotics operation is the bugaboo for Carter. Primus must break-up this narcotics organizations' underwater refining and delivering of heroin.
The drama in this episode is provided by an inferno of an offshore drilling rig. An electrical storm causes a gigantic explosion aboard the rig. When the off... read more
Undersea sabotage is the problem faced by Carter. Primus investigates when oil piped from a tiny Arabian nation mysteriously disappears before it reaches its... read more
Primus and Charlie Kingman arc spending 60 days in the undersea habitat Tektite II with three astronauts while they prepare themselves for a life on a manned... read more
The deranged Captain of a foreign submarine threatens to attack the east coast of the U.S. Primus makes a valiant attempt to Intercept the armed sub which it... read more
Drama involving an impending hurricane. While training dry land miners to dig on the ocean Primus discovers that two miners searching for ore samples are mis... read more
Toni and Charlie are trapped in a shark cage which drops to depths beyond which divers should go and Primus attempts their rescue amid a school of frenzied s... read more
At first it looks like a simple youthful prank when Primus captures three college students while stealing Primus' portable sub the Shark Hunter. But the stud... read more
In this episode, Primus is dogged by a sniper. Primus helps a community whose important economic resource, a phosphate plant, is also its greatest liability,... read more
Primus unravels a mystery involving the disappearance of an experimental torpedo. Carter Primus is called to recover a live experimental torpedo which has su... read more
A plane crashes into the ocean with a payload of $7,000,000 worth of industrial diamonds. Insurance investigator Derek Simpson (Lloyd Bochner) commissions Ca... read more
Foiling a museum heist leads Primus on an underwater chase. Primus is commissioned to guard a museum filled with priceless treasures. The museum is located n... read more
The police chases a gang involved in the plutonium black market. Primus replaces one of the gang members, a Navy diver, after the guy is washed away dead on ... read more
A whirlpool turns into a danger factor for Primus and other divers. Carter Primus hires professional skin divers to locate a boat which disappeared mysteriou... read more
While Primus and Toni train three divers, one receives a gash from the sunken wreckage they're exploring and a school of 200 sharks is attracted by the blood!
In this concluding episode a school of sharks surrounds a diving mission led by Primus and injures one diver. While Primus surfaces for medical aid and fresh... read more
A man stricken with nitrogen narcosis disappears into a shapeless eerie ocean mass. Primus swims to investigate. Bill Bolton, an ex-frogman(Dan Chandler) is ... read more
Jorge Alquiero hires Primus for a dangerous underwater job. Primus dives after an oceanographer stranded on the ocean floor. But the assignment is hindered b... read more