Francis Durbridge certainly knew how to write a mystery play, either for radio or tele … though low budget and formulaic, they were still fun. The old Beeb did their bit by casting well, e.g. with Paul Temple, Steve and the supporting cast.

In this series, aside from the naff title, the cast make this a most pleasant serial … the leading man, his sidekick and the main police inspector … the acting stands out imho. Anyway, here are the concluding three: