The following information is derived from a brief cast list held in the Crawford Collection:
Jack Thompson (John Mitchell), Helen Morse (Goldi Taylor), Redmond Phillips (Major Wilson), Julie Day (Juliet Mitchell), Ken Goodlet (Mr Robinson), Terry Norris (Picker), Will Deumer (Eric), Max Fairchild (Thin Man), Nevil Thurgood (Fat Man), and Christine Amor (Jennifer).
The casting call sheets held in the Crawford Collection also show the following information:
Other actors considered for the role of Major Wilson included Brian James, Nigel Lovell, Michael Duffield, and Denzil Howsen.
Actors considered for the role of Stan Parsons included Raymond Moore and Ken Weaver.
Robynne Rae was cast as Caroline Wilson.
Peter Byrne was cast as Hippie.
Both Wendy Robinson and Maggie Fraser were considered as stand-ins for Helen Morse.
Peter Dixon was cast as Detective.
Actors considered for the role of Plainclothesman included Terry Mountain, Bruce Barnes, Clive Hearne, and Bill Bennett.
George Novak was cast as Customs Officer.
