- Writer:
- Peter Fraser
- "Look at the Moon" words and music by/Accompanist:
- Christopher Hodder-Williams
- Producer:
- David H. Godfrey
- Telephone operator:
- Rosamund Greenwood
- Beniamino Delgardo:
- Ian Sadler
- Detective-Inspector Stephen Cook:
- Carl Bernard
- Matilda:
- Lucille Lisle
- Shirley Haven:
- Louise Howard
- Ellen:
- Natalie Lynn
- Detective-Sergeant Broadwood:
- Geoffrey Bond
- Dr Turner:
- Frank Tickle
- Detective-Constable Pugh:
- Aubrey Richards
- Sir Edward Campbell, QC:
- Franklyn Bellamy
- PC Anderson:
- Cyril Shaps
- Michael Berwick:
- Patrick Troughton