Agatha Christie's charming crime-solvers Tommy and Tuppence Beresford are an ordinary married couple living in 1950s Britain at the start of the Cold War. Sometimes bickering but always sweet on each other, they find themselves knee-deep in danger when they stumble into spy craft and end up being rather good at it.--Container

Videodisc release of the 2015 British television productions. Adapted for television from the novels : The secret adversary, and N or M? / by Agatha Christie.

Disc 1. The secret adversary, parts 1-3 -- Bonus interview with Clarke Peters (25 min.) -- Featurette about the costume design (32 min.) ; Disc 2. N or M?, parts 1-3 -- Bonus behind-the-scenes featurette (57 min.) -- Photo gallery.