Nelson's sister is abducted by enemy agents who demand top-secret information as ransom, but will Nelson betray his country in order to protect the only family he has?

Added: September 24, 2007
Air date: April 19, 1965
Duration: 51:18
Rating: 4.5 / 5.0

Nelson and Crane are dismayed when an egotistical, publicity-seeking scientist is given command of the Seaview in order to test a new pressure system which will allow the sub to explore uncharted depths.

Added: September 24, 2007
Air date: April 12, 1965
Duration: 51:29
Rating: 4.2 / 5.0

The Seaview travels to Scotland via a secret, natural underground conduit to investigate the mystery of the legendary Loch Ness Monster.

Added: September 24, 2007
Air date: April 05, 1965
Duration: 51:26
Rating: 4.1 / 5.0

While investigating the loss of an American submarine, Crane and Nelson are captured by foreign scientists who use an experimental drug to turn the two friends into bitter enemies.

Added: September 24, 2007
Air date: March 29, 1965
Duration: 51:27
Rating: 4.7 / 5.0

The crew is joined by Captain Adams, the soul survivor of an ill-fated missile launch, in search of the mysterious force responsible for the disaster.

Added: September 24, 2007
Air date: March 22, 1965
Duration: 51:18
Rating: 4.0 / 5.0

Nelson is stranded aboard a life raft with the ex-premier of a hostile foreign power who carries vital information on a plot to destroy the free world.

Added: September 24, 2007
Air date: March 15, 1965
Duration: 51:26
Rating: 4.5 / 5.0

The crew of the Seaview is called to investigate an undersea laboratory where scientists are surgically transforming humans into amphibians.

Added: September 24, 2007
Air date: March 08, 1965
Duration: 51:28
Rating: 4.4 / 5.0

A strange experiment designed to speed up evolution goes horribly awry, and an enormous protoplasm threatens the lives of the entire crew.

Added: September 24, 2007
Air date: March 01, 1965
Duration: 51:31
Rating: 3.7 / 5.0

Crane is brainwashed by enemy agents, and his new mission is to deactivate certain strategic undersea missiles and to assassinate Admiral Nelson!

Added: September 24, 2007
Air date: February 22, 1965
Duration: 51:15
Rating: 4.3 / 5.0

Commander Crane is sent along as a mere observer as the Seaview embarks on her first computer-controlled, automated mission, but he soon discovers that he's not alone and danger is afoot.

Added: September 24, 2007
Air date: February 15, 1965
Duration: 51:25
Rating: 4.5 / 5.0

A mad art connoisseur seizes control of the Seaview and pirates Leonardo da Vinci's Mona Lisa from a French ship bound for the World's Fair.

Added: September 24, 2007
Air date: February 08, 1965
Duration: 51:25
Rating: 3.9 / 5.0

After returning from a mission in deep space, a lifelike robot is brought aboard the Seaview, but the crew soon discovers that the robot has been mysteriously re-programmed to wreak havoc.

Added: September 24, 2007
Air date: February 01, 1965
Duration: 51:28
Rating: 4.5 / 5.0

An undersea earthquake exhumes hundreds of strange metallic capsules, and a powerful humanoid creature who could destroy mankind is restored to life after millions of years in suspended animation.

Added: September 24, 2007
Air date: January 25, 1965
Duration: 51:08
Rating: 4.6 / 5.0

When a mass-launching by a foreign power sets the U.S. on nuclear alert, the Seaview goes into a fail-safe maneuver, but is the launch really what it appears to be, and does this actually mean it's doomsday?

Added: September 24, 2007
Air date: January 18, 1965
Duration: 51:29
Rating: 4.6 / 5.0

After Nelson's experimental submarine is attacked by a giant jellyfish, tension mounts aboard the Seaview as Nelson exhibits signs of a mental breakdown.

Added: September 24, 2007
Air date: January 11, 1965
Duration: 51:28
Rating: 4.8 / 5.0

Admiral Nelson is kidnapped from a plane during mid-flight and held on a remote island by Nazis who plan to conquer the world.

Added: September 24, 2007
Air date: January 04, 1965
Duration: 51:32
Rating: 4.1 / 5.0

The crew of the Seaview is entrusted to protect, and possibly save, the life of the president of the United States from enemy agents.

Added: September 24, 2007
Air date: December 28, 1964
Duration: 51:18
Rating: 4.1 / 5.0

The Seaview races to return a twelve-year-old prince to his homeland to assume the throne before the country is taken over by an anti-U.S. faction.

Added: September 24, 2007
Air date: December 21, 1964
Duration: 51:26
Rating: 4.3 / 5.0

A scientist enlists the aid of the Seaview and her crew after a giant whale destroys his ship.

Added: September 24, 2007
Air date: December 14, 1964
Duration: 51:24
Rating: 4.5 / 5.0

A renowned meteorologist boards the Seaview to investigate the cause of unprecedented blizzards causing havoc in Florida.

Added: September 24, 2007
Air date: December 07, 1964
Duration: 51:25
Rating: 4.2 / 5.0