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Who are the invaders? An undersea quake uncovers mysterious metallic capsules, which have been hidden for millions of years. In one capsule brought aboard Seaview is the strange and powerful Zar, who claims his people lived on earth eons ago. He wants the rest of the capsules retrieved and all his people revived. Nelson and Crane must decide whether Zar and his technologically sophisticated people can co-exist with humans. And Zar's blood contains a deadly virus, normal for his people, but lethal to humans. The slightest injury to him could spell doom for the human race!

Episode Info

Episode number: 1x20
Production Number: 7221
Airdate: Monday January 25th, 1965

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Guest Stars
Robert Duvall
As Zar (as Robert Duval)

Co-Guest Stars
Richard Bull
As Doctor
Mike McDonald
As Foster (as Michael McDonald)

Arch Whiting
As Sparks
Jim Goodwin (1)
As Dive Planes Operator
Main Cast
Richard Basehart
As Adm. Harriman Nelson
David Hedison
As Capt. Lee B. Crane
Henry Kulky
As Chief Curley Jones
Robert Dowdell
As LCDR Chip Morton
Del Monroe
As Kowalski
Episode Notes
Zar is never identified in dialogue. One must wait until the end credits to learn his name.

Episode Goofs
Lee Crane says that "oxygen is highly combustible". This is a popular misconception, but untrue. Explosions and fire are the very rapid exothermic oxidation of some other substance - so rapid that the amount of heat given off is considerable. However, there must be another substance present to burn. It is true that in high oxygen situations, substances will burn more readily than they would otherwise - because there is sufficient oxygen to support the reaction.

Cultural References
Sorry, Doobie Brothers / Steely Dan fans. This Michael McDonald is not the singer.

Other Episode Crew

CreatorIrwin Allen
ProducerIrwin Allen
Associate ProducerJoseph Gantman
Unit Production ManagerHal Herman
Music EditorHarry Eisen
Music SupervisorLionel Newman
Set DecoratorWalter M. Scott  |  Robert De Vestel
Production AssistantPaul Zastupnevich
Post Production SupervisorGeorge E. Swink
Director of PhotographyWinton C. Hoch
Story EditorWilliam Welch
Art DirectorJames McGuire  |  Jack Martin Smith
Post Production CoordinatorRobert Mintz
Production ManagerGaston Glass
Film EditorFred Baratta
Assistant DirectorGilbert Mandelik
Executive In Charge Of ProductionWilliam Self (2)
Supervising Music EditorLeonard A. Engel
Theme MusicPaul Sawtell
Special Photographic EffectsL.B. Abbott
Supervising Sound Effects EditorRalph Hickey
Associate Story EditorAl Gail
Supervising Film EditorRoland Gross
Warning: Voyage to the Bottom of the Sea season 1 episode 20 guide may contain spoilers
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