Marshall Thompson
Dr. Cliff Mitchell
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A physicist finds himself drawn into an investigation to track down a spy at his research station.
Top Billed Cast
| Release Date | 1958-12-01 |
|---|---|
| Runtime | 1h 18m |
| Director | Ronald Kinnoch |
| Producers | Ronald Kinnoch, Richard Gordon |
| Writers | Brian Clemens, Ronald Kinnoch |
