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First Season Episodes - Ghost In Space (episode 19)


A turbulent "ghost" threatens the Robinson colony as Dr. Smith insists it is the troubled spirit of his Uncle Thaddeus.

Don rescues John from the bog's poisonous gas-mist and sends Smith to Drill Site Five to do some blasting. Will accompanies him. But Smith sends Will back on a ruse and throws the blasting cap into the bog where it explodes. What he does not realize is that an invisible, slithering Presence rises from the disturbance, leaving weird footprints in its path. 

At the Jupiter 2 that night, Smith fashions a ouija board with which to call the spirit of his Uncle Thaddeus. When Don and the others dismiss Smith's handiwork, the dauntless doctor and Penny conduct the seance. The Presence looms up and dashes the ouija board against some rocks. Smith and Penny rush back to the ship but the Presence follows and wrecks havoc at the campsite. Smith is certain that it was Uncle Thaddeus. Three-toed footprints are discovered in the area. 

Over breakfast, Don discovers that Smith scuttled the explosive in the bog and he and John deduce that the Presence is the result. At the bog, the Presence attacks Don and John and they rush back to the ship. At the campsite, the Presence again I attacks and when Don attempts to shoot at it. Smith interferes to keep him from hurting Uncle Thaddeus. Everyone finally inside, the Presence drains the ship of its power. Realizing that the Presence feeds on electrical power, John and Don build a trap. 

The next night the Presence is ensnared. But Smith outfits himself as a Druid and sneaks off with Will to exorcise the evil spirits he assumes are massing to attack. The Presence, meanwhile, eats its way out of its cage and heads for the bog. After it nearly engulfs Smith, he turns to look for Will. Will, meanwhile, has become invisible and searches for Smith. Smith drags back to camp with mournful word of Will's demise. John and Don rush to the bog, where the Presence is already swooping down on Will. But as he does so, the Presence disappears and Will reappears, enabling Don and John to find him. 

Later as Will, Smith and the Robot return from fishing in a moat, they suddenly are confronted by a menacing robotoid.

Filming

Cast
Professor John RobinsonGuy Williams
Maureen RobinsonJune Lockhart
Major Don WestMark Goddard
Judy RobinsonMarta Kristen
Penny RobinsonAngela Cartwright
Will RobinsonBilly Mumy
Dr. Zachary SmithJonathan Harris
RobotBob May
Voice of the RobotDick Tufeld
Production
Executive ProducerIrwin Allen
DirectorDon Richardson
WriterPeter Packer
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