A BBC anthology series featuring adaptations of detective stories over 45 episodes in three seasons that ran from 1964 to 1969. As with many BBC programmes made before the early 1970s, many of its episodes no longer exist. Of the eighteen episodes from the first season only twelve are currently known to exist; likewise six of the sixteen editions from the second run are considered lost, and just one of the final ten survives in the archives.
- 1. The Moving Toyshop1964-03-30
- 2. The Drawing1964-04-06
- 3. Trent's Last Case1964-04-13
- 4. End of Chapter1964-04-20
- 5. The Judas Window1964-04-27
- 6. Dishonoured Bones1964-05-04
- 7. The Man Who Murdered in Public1964-05-11
- 8. The Speckled Band1964-05-18
- 9. The Night of the Horns1964-05-25
- 10. Subject: Murder1964-06-01
- 11. Death in Ecstacy1964-06-08
- 12. A Connoisseur's Case1964-06-15
- 13. The Loring Mystery1964-06-22
- 14. The Hungry Spider1964-06-29
- 15. The Case of Oscar Brodski1964-07-06
- 16. The Speaking Eye1964-07-13
- 17. Death of a Fellow Traveller1964-07-20
- 18. The Quick One1964-07-27