Three astronauts land on Mars, hoping to find valuable minerals. After discovering a rich deposit of uranium ore, one of the men becomes increasingly paranoid. Is it just his imagination, or are they really being watched? A crystal egg reveals live tableaux of the planet Mars. A 19th Century scientist is obsessed with investigating the crystal, but the antique shop owner who came across the seemingly worthless glass hopes to sell it ASAP to a tall, insistent stranger, for whom no price is too dear. The delay while the scientist experiments on the egg makes the buyer even more desperate.

Directed by Don Medford
Starring Leslie Nielsen