Sixth-former Martin Clifford is plunged into the world of espionage and sabotage when he and his class see schools programmes from "The Voice of Truth". Forrester, an Intelligence officer, informs him that spies are planning to sabotage a local US Airforce base in his village. Can he identify "The Voice of Truth" in time?
Pick an episode to start
Choose a season and an episode below, or start from the first one.
Streaming and downloads are provided by third-party sources. If one doesn't work, try another source above.
