Timeslip star Spencer Banks heads the cast of this tense espionage series created and written by Victor Pemberton, whose previous credits include key stories for Doctor Who and Ace of Wands. Though originally made in colour only black and white telerecordings now exist and they were transferred for this release.

Martin Clifford lives in a quiet English village and is busy studying for his exams when he suddenly finds himself at the centre of a dangerous espionage plot! The nearby USAF base has been selected to become the communications centre for top-secret NATO exercises and Martin is tasked with assisting British Intelligence to uncover enemy agents at large in the village.