Synopsis
A planet is discovered in the same orbit as Earth's but is located on the exact opposite side of the sun, making it not visible from Earth. The European Space Exploration Council decide to send American astronaut Glenn Ross and British scientist John Kane via spaceship to explore the other planet.
Cast

Roy Thinnes
Colonel Glenn Ross

Ian Hendry
John Kane

Patrick Wymark
Jason Webb

Lynn Loring
Sharon Ross

Loni von Friedl
Lisa Hartmann
Franco De Rosa
Paulo Landi

George Sewell
Mark Neuman

Ed Bishop
David Poulson

Philip Madoc
Dr. Pontini

Vladek Sheybal
Psychiatrist
George Mikell
Captain Ross

Herbert Lom
Doctor Hassler

Nicholas Courtney
Data Analyst
Peter van Dissel
Mallory
Jon Kelley
Nurse
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