archytele The Vault
Season guide

Man from Atlantis: Season 1

13 episodes Premiered Sep 22, 1977 Updated Oct 5, 2026
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Season 1 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 1 Progress Shield

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Binge Efficiency Engine

Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

23%
77%
Mytharc (3): Crucial lore & season climaxes
Core (10): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

Melt Down

Sep 22, 1977 · 49 min

Schubert threatens to cause worldwide flooding by using powerful microwaves to melt Earth's polar ice caps, unless the government turns Mark Harris over to him.

S1·E2 Core

The Mudworm

Oct 13, 1977 · 49 min

When a multimillion-dollar underwater probe malfunctions and begins attacking any ship that travels near it, Mark must reason with its highly advanced brain and convince it to stop

S1·E3 Core

The Hawk of Mu

Oct 18, 1977 · 48 min

Mark, investigating a power outage, discovers a centuries-old hawk statue from the legendary civilization of Mu. The statue, when used properly, can remove the power from a large a

S1·E4 Core

Giant

Oct 25, 1977 · 48 min

The oceans are leaking through a fissure in the ocean floor. A con-man named Muldoon agrees to guide Mark through the fissure to investigate. However, Mark is unaware either that g

S1·E5 Core

Man O' War

Nov 1, 1977 · 48 min

Using his genetic scientists, Schubert produces a giant jellyfish which he intends to release unless his extortion demands are met.

S1·E6 Core

Shoot-Out at Land's End

Nov 8, 1977 · 48 min

Mark is somehow linked with a man named Billy, existing in a wild west town, who appears to be his twin. Investigating, Mark arrives in the town and discovers that Billy once had t

S1·E7 Core

Crystal Water, Sudden Death

Nov 22, 1977 · 48 min

Schubert attempts to make a satellite weapon to knock out Earth's communications. However, to power the weapon, he needs the energy crystals protected by a force field under the oc

S1·E8 Core

The Naked Montague

Dec 6, 1977 · 48 min

An underwater landslide transports Mark to Verona, Italy...in the days of Romeo and Juliet.

S1·E9 Core

C.W. Hyde

Dec 13, 1977 · 48 min

C. W. develops a Jekyll-and-Hyde personality after swallowing a mysterious liquid.

S1·E10 Core

Scavenger Hunt

Apr 18, 1978 · 48 min

Mark re-encounters Muldoon, his nemesis from "Giant," who is using a sea monster to make island natives sacrifice young girls to him.

S1·E11 Core

Imp

Apr 25, 1978 · 48 min

An impish little man enters an underwater station and causes the crew to become irrational simply by touching them. After three crewmen die, the F.F.O.R. hears Duke, the last crewm

S1·E12 Mytharc

The Siren

May 2, 1978 · 90 min

While investigating the mysterious loss of three ships in one part of the ocean, Mark and the crew of the Cetacean encounter a submarine operated by a modern-day pirate. The pirate

S1·E13 Mytharc

Deadly Carnival

Jun 6, 1978 · 90 min

Mark goes undercover to investigate members of a carnival planning to break into a museum. The only way to break into the museum is through an underwater tunnel, through which only

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