- Author/Adapted by:
- Dulcie Gray
- Production:
- Audrey Cameron
- Richard Quayle:
- Richard Hurndall
- Guy Brooks:
- Bruce Stewart
- Manager of the Buona Hotel:
- Ralph Hallett
- Dr Manton:
- Keith Williams
- Detective Transom:
- Tom Watson
- Detective-Inspector Peters, of the Melbourne Criminal Investigation Bureau:
- Michael Turner
- Gordon Frodsham:
- Jeffrey Hodgson
- Valerie Harding:
- Mary Wimbush
- Felix Milton:
- Philip Leaver
- Betty Ward:
- Beverley Dunn
- Mrs Matheson:
- Shirley Cameron
- Porter at the Buona Hotel:
- Tom Watson
- Bill Saunders:
- Robert Hewitt
- Sue Saunders:
- Leila Blake
- Janie Thomas:
- Paddy Turner
- Larry French:
- Peter Noel Cook
- Mrs Linette Barking:
- Brenda Dunrich
- Frank Ward:
- Keith Williams
- Telephone operator, air hostess, hotel receptionist, customers, policemen, and guests played by:
- Nigel Anthony and members of the cast
