- Writer:
- Tony Hoare
- Designer:
- Humphrey Jaeger
- Sound:
- Dick Manton
- Sound:
- John Hale
- Film Editor:
- Graham Walker
- Photography:
- John Wyatt
- Producer:
- Philip Hinchcliffe
- Director:
- Gordon Flemyng
- Det-Supt Steve Hackett:
- Patrick Mower
- Det-Chief Supt Tate:
- Philip Madoc
- Det-Sgt Frank Bonney:
- Brendan Price
- Det-Sgt Louise Colbert:
- Vivien Heilbron
- Heslop:
- Donald Sumpter
- Carol:
- Katherine Fahy
- Wilson:
- Mark McManus
- Collyer:
- Maurice O'Connell
- Det-Con Fletcher:
- Grahame Mallard
- Det-Con George:
- Peter Dean
- Partridge:
- Barrie Cookson
- Murray:
- David Leland
- Scott:
- George Irving
- Brian Aston:
- Julian Fox
- Mrs Aston:
- Ann Curthoys
- Aston's children:
- Michael Newton
- Aston's children:
- Juanita Smith
