- Unknown:
- David Wickes
- Unknown:
- Philip Hinchcliffe
- Unknown:
- Philip Madoc
- Unknown:
- Brendan Price
- Unknown:
- Vivien Heilbron
- Producer:
- Philip Hinchcliffe
- Directed By:
- David Wickes
- Hackett:
- Patrick Mower
- Det-Supt Steve Hackett:
- Patrick Mower
- Det Chief Supt Tate:
- Philip Madoc
- Det-Sgt Frank Bonney:
- Brendan Price
- Det-Sgt Louise Colbert:
- Vivien Heilbron
- Det-Con Dukes:
- Carl Rigg
- Ros:
- Ania Marson
- Maynard:
- Jon Laurimorb
- Van der Linden:
- Peter Godfrey
- Purser:
- Keith James
- Chief Officer:
- Jack May
- Security Chief:
- Allan Mitchell
- Panata:
- Del Baker
- Judy Knight:
- Verna Harvey
- Ted Knight:
- Hal Jeayes
- Det-Insp Wilson:
- James Greene
- Forensic Officer:
- Bernard Kay
- Tim Harris:
- Malcolm Hughes
- Neighbour:
- Eamonn Boyce
- First Det-Con:
- Neil Kennedy
- Second Det-Con:
- Alan Haines
- Shop assistant:
- Wendy Brierley
- Crane cab driver:
- Hessel Saks
- Ship's captain:
- Mark Brackenbury
- Waiter:
- Peter MacArte
- Mrs Knight:
- Katherine Page
