Toxic WasteMike and Jennifer try to salvage drums of toxic waste from the ocean depths.
Murder at Sixty Feet
E2
Murder at Sixty FeetA man (Donnelly Rhodes) hires Mike (Ron Ely) to teach his paralyzed wife scuba diving---only to fire him when the therapy begins to show results.
Underwater Park
E3
Underwater ParkWhen Mike (Ron Ely) is hired to study the proposed site of an underwater park, his life is threatened by men who are illegally mining the mineral-rich area.
Underwater Quake
E4
Underwater QuakeThe Nelsons investigate a marina construction company that is setting off explosions that are disturbing an underwater volcano.
The Meeting
E5
The MeetingA federal agent, William Taylor, hires Mike (Ron Ely) to collect evidence on a crime boss plotting a drug scam.
Pearl Beds
E6
Pearl BedsThe Nelsons help a pearl farmer (Lisa Lau) catch the thieves who've been stealing from her each year at harvest time.
The Big Blow-Up
E7
The Big Blow-UpMike confronts his worst nightmare when an old friend and an old enemy come back into his life to threaten Jenny.
Treasure Hunt
E8
Treasure HuntWhen Jenny meets an acquaintance of Mike's, treasures of the sea and of the heart are in the balance, which causes Mike some measure of concern.
The Torch Men
E9
The Torch MenWhile scuba diving, the Nelsons discover the wreckage of a plane---which involves them in a plot to steal computer software.
Girl In Trunk
E10
Girl In TrunkA magic trick turns deadly when Mike (Ron Ely) makes the acquaintance of a temperamental illusionist who's trying to perfect his underwater escape act.
The Persuaders
E11
The PersuadersDrug smugglers force Mike at gunpoint to help them retrieve a sunken shipment of narcotics.
Danger--Mines Ahead!
E12
Danger--Mines Ahead!Jenny and Mike look into the peculiar behavior of two ecologists — and find a deadly underwater mine in the process.
Jennifer's Rescue
E13
Jennifer's RescueWhen Jennifer fails to return from working on a research project in the Caribbean, Mike (Ron Ely) risks his own life to search for her.
The Stunt
E14
The StuntA best-selling adventure writer lady challenges Mike to a scuba race.
Wet Diamonds
E15
Wet DiamondsMike becomes suspicious of a woman's motives for taking diving lessons when he learns that she's afraid of deep water.
Ultrasonic Tag
E16
Ultrasonic TagMike becomes suspicious of a woman's motives for taking diving lessons when he learns that she's afraid of deep water.
The Witness
E17
The WitnessMike learns that the two men who chartered the Sea Hunt to go scuba diving are really seeking safety from hit men.
The Sea Hunt's Been Stolen
E18
The Sea Hunt's Been StolenTwo brothers (Terence Kelly, Denis Blouin) charter the Sea Hunt for a diving expedition, hoping to discover where the previous owner of the boat hid stolen treasure.
Amigo
E19
AmigoMike (Ron Ely) is hired by a professor at the Marine Institute to search for fossils and runs up against two young thugs intent on finding the fossils before him. Kimber Sissons. Bernardo, a young Mexican boy helps Mike locate a safe entrance to an underwater fossil cave.
The Scavenger
E20
The ScavengerMike comes to the aid of his former diving instructor, a cantankerous old man (Barney O'Sullivan) on the trail of sunken treasure.
The Siren
E21
The SirenMike and Jennifer rescue two injured divers, who later claim to have seen a beautiful woman underwater and heard bells ringing.
The Phantom Strikes
E22
The Phantom StrikesThe Phantom is a submarine fitted with a camera. Through the powerful underwater video camera, Mike (Ron Ely) watches two men hide something near a coral reef and his further investigations lead him to a spy ring.
