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?
Episode 1
Jan 19, 1972
In the town of Redlow an A level student is persuaded to help expose enemy spies.
Episode 2
Jan 26, 1972
No description available.
Episode 3
Feb 2, 1972
No description available.
Episode 4
Feb 9, 1972
No description available.
Episode 5
Feb 16, 1972
No description available.
Episode 6
Feb 23, 1972
No description available.
Episode 7
Mar 1, 1972
No description available.
Episode 8
Mar 8, 1972
No description available.
Episode 9
Mar 15, 1972
No description available.
Episode 10
Mar 22, 1972
No description available.
Episode 11
Mar 29, 1972
No description available.
Episode 12
Apr 5, 1972
No description available.
Episode 13
Apr 12, 1972
No description available.
