Justice League
S04E17 Nightmare
Captain Crane finds himself in the Flying Sub when he picks up a distress signal from the Seaview. Returning to his submarine, he discovers it deserted once more. Suddenly, a force-field on the spiral stairs knocks him out, and he encounters an unknown assailant who shoots at him. After some time, he finally locates the crew, only to hear Nelson accusing him of treachery. It takes an hour and a bullet in the shoulder—fired by none other than the stranger—before Crane learns that aliens are conducting experiments on humanity.
Season 4 Episodes
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Fires of Death
The Deadly Dolls
Cave of the Dead
Journey with Fear
Sealed Orders
Man of Many Faces
Fatal Cargo
Time Lock
Rescue
Terror
A Time to Die
Blow Up
Deadly Amphibians
The Return of Blackbeard
Terrible Leprechaun
The Lobster Man
Nightmare
The Abominable Snowman
Secret of the Deep
Man-Beast
Savage Jungle
Flaming Ice
Attack!
Edge of Doom
The Death Clock
No Way Back