While investigating the destruction of the fleet by a flying saucer, Nelson and Kowalski are captured by aliens. One of the aliens offers help to the Seaview crew to stop his people.
Did You Know?
Kevin Hagen and Richard Bull also appeared together in "Little House on the Prairie" as regulars several years later. See more
Captain Crane and Chief Sharkey swim from the Seaview to the abandoned flying sub. Inside the sub, they come up into the main cabin from below. But the sub is lying on the sandy ocean bottom, blocking access to the hatch on the bottom of the craft. See more