The following details are derived from material held in the Crawford Collection:
Alister Smart (Colin Brown), Penne Hackforth Jones (Helen), Pauline Charleston (Elaine King), John Morgan (Dr Gordon King), Jack Hume (Theodore Ward), Marnie Randall (Mrs Brown), Clinton Savoury (Barry Brown), Bruce Kerr (Dr Leo Hughes), Simon Chilvers (Joe), Alan Rowe (Club Manager), Max Fairchild (Max), and Vernon weaver (Jerry).
The casting call sheets held in the Crawford Collection also show the following information:
Actors considered for the role of Elaine King included Elizabeth Wing and Pauline Charleston.
Actors considered for the role of Colin Brown included Mark Albiston, Alister Smart, and Tim Elliott.
Man 1 was played by Wellington Lee.
Woman was played by Phyllis Chomley.
Doctor was played by John Proper.
Uniformed Policemen were played by Wally Pratt and Chris Peters.
The stuntman was Tony Sprague.
The stunt driver was Fred Sutherland.
The receptionist was played by Rosemary Mason.
The two men patients were played by Gordon Allen and Danny Burke.
The two women patients were played by Margaret Edwards and Mary Murray.