Admiral Nelson and Captain Crane are shocked to see a scientist shot to death during a live televised news conference viewed from the Nelson Institute. Especially shocking is that the ... See full summary »



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Episode cast overview:
Del Monroe ...
Jock Gaynor ...
Dr. Randolph Mason
Lt. Comdr. Chip Morton (as Bob Dowdell)
Bradd Arnold ...

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Admiral Nelson and Captain Crane are shocked to see a scientist shot to death during a live televised news conference viewed from the Nelson Institute. Especially shocking is that the killer appears to be Admiral Nelson. Both Nelson and Crane are eventually able to overcome efforts to stop them from boarding the Seaview. The submarine races to stop an earth-threatening project set in motion by the radical scientist, who may not really be dead after all. In the meantime, a very dangerous master of disguise causes mayhem and confusion as he tries to stop the Seaview from saving the world. Written by bh-boclraca

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Adventure | Sci-Fi




Release Date:

29 October 1967 (USA)  »

Company Credits

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Technical Specs


Sound Mix:

(RCA Sound Recording)


Aspect Ratio:

1.33 : 1
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Did You Know?


In the scene where The Admiral and Captain Crane are interviewing Chief Sharkey, in the Admiral's cabin, if you look at the Admiral's shirt collar his Four Stars are not on the collar, yet in other scenes they are. See more »

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User Reviews

Moon Killer
7 December 2009 | by (Ambrosia) – See all my reviews

Dr.Randolph Mason ( Jock Gaynor ) is being interviewed for a television programme concerning his latest project, an attempt to harness the power of electro-magnetism. Only one man opposes the scheme - Admiral Harriman Nelson. Without warning, Nelson appears and shoots the scientist dead, before the eyes of millions of amazed viewers. One of these amazed viewers is Nelson himself, watching from the Nelson Institute of Marine Research. The Admiral has discovered that Mason's electro-magnet is so strong, so powerful it is literally pulling the Moon from its orbit and putting it on a collision course with the world.

The Seaview sets sail, with Nelson smuggled aboard in a crate. They know where the electro-magnet is, and intend destroying it. Also aboard is Mason ( the man killed on live television was a fake ). The deranged scientist has the unique ability to change his features to resemble anybody ( he earlier impersonated Nelson at the studio ). He could be anyone aboard...

This is more like it. After an eternity of instalments in which the Seaview crew rarely ventured outside the ship, we get an episode in which a decent chunk takes place in the outside world. It harks back to the thrilling spy stories of the early part of Season 2. There's even a nice little sequence in which Crane drives off in a sports car from the Nelson Institute, and is tracked by Mason's men.

The plot makes no sense whatever. For some strange reason, no-one seems to notice that the Moon is heading towards the Earth and Mason's impersonations are remarkable in that he is not merely able to copy someone's face but also height and voice patterns! Don't think about this one too much, just enjoy.

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