The following information is derived from material held in the Crawford Collection:
John Stanton (Carl Reid), Izobel Kirk (Roz Thompson), Gus Mercurio (Rocky Walker), Harold Hopkins (Tony Grey), Gerlad Fraser (Bennett), Roger Carroll (Smith), Max Cullen (Brian Young), Karen Peterson (Jill), Kurt Ludescher (Joe), Lloyd Cunnington (Guard: Jack), Steven Overall (Guard: Jim), Danny Burke (Doctor Fox), Les Baxter (Farmer), Ron Pinnell (Evans), Dennis Price (Anderson), Warwick Randall (Taylor), Chris Peters (Police Constable), and Graeme Mathrick (Stuntman).
The casting call sheets also show the following information:
Other actors considered for the role of Smith included Ernie Bourne.
Other actors considered for the role of Guard (Jack) included Nevil Thurgood.
Other actors considered for the role of Guard (Jim) included Bill Tyrell.
