- Devised by:
- Colin Morris
- Story by:
- John Cresswell
- Script:
- Bob Stuart
- Producer:
- Ronald Travers
- Director:
- Gerry Mill
- Philip Cooper:
- Jeremy Bulloch
- Ellis Cooper:
- Alan Browning
- Vivienne Cooper:
- Maggie Fitzgibbon
- Arnold Tripp:
- Gerald Cross
- Augustus Tripp:
- John Sharp
- Ethel Louella Heppenstahl:
- Maggie McGrath
- Gran Hamilton:
- Gladys Henson
- Mrs. Brassett:
- Eileen Way
- Peter Connolly:
- Patrick Connor
- Betty Lloyd:
- Helen Cotterill
- Sydney Huxley:
- Anthony Verner
- Mr. Waller:
- John Harvey
- Detective Thomson:
- Stanley Meadows
- Naylor:
- Gordon Griffin
- Arthur Huntley:
- Tony Steedman
- James Neal:
- David Knight
- Amelia Huntley:
- Naomi Chance
- Jeff Langley:
- Michael Collins
- Eunice Huntley:
- Sally Lahee
- Terry:
- Michael Johnson
- Ian Creighton:
- Jonathan Dennis
- Archie Lean:
- Colin Bell
- Mrs. Hartley:
- Dorothea Phillips
- Alfred Dodge:
- Howard Douglas