Overview
Scientists who worked for the allies on the development of the atom bomb in World War II are revealed to be Russian agents.
Cast
- Andrew Ray as Klaus Fuchs
- Michael Craig as Bruno Pontecorvo
- Ray Smith as Doctor Cockcroft
- Peter Jeffrey as Major Phillips
- John Franklyn-Robbins as Skardon
- Edward Wilson as Alan Nunn May
- Antony Carrick as Commander Burt
- Sandra Payne as Marianne Pontecorvo
- Victoria Fairbrother as Betty