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13 Episodes 1972 - 1972
Episode 1
A scientist defects to the West with his invention, Scorpio. His rescuers want to exploit the device.
Episode 2
Colin has been double-crossed, while Mike and Steve take a trip to the races.
Episode 3
Jill takes a tumble, and Colin demonstrates the microscopic effects of Scorpio.
Episode 4
Episode 5
Episode 6
Episode 7
The mysterious happenings lead the team to Sweden and the deadly Helga Lindström who is gathering the world's top nuclear scientists by means of kidnapping their children and blackmail, but for what purpose.
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
Episode 13