Sergeant Bill Kirby (6 episodes)

Julian Moody (1 episode)

Miles Strathairn (1 episode)

James McCabe (3 episodes)

Tagge Webster (2 episodes)

Gerald Waddington (1 episode)

Tim Ayres (2 episodes)

Percy Spender

Salty Ben (13 episodes)

Man Behind the Desk

Det Sen Con Micaelis

Larry Crockett (2 episodes)

Dr. Andrew Gallin (1 episode)

Mr. Emmett (2 episodes)

Mr. Bull (26 episodes)

Colonel Downes

(13 episodes)

Sgt. Harris (5 episodes)

Dr. Geoff Standish (221 episodes)

Pig Killer

Sir Frederick Morringer

Geoff

William Nielsen

Dr. Louis Bertrand

John Macarthur (6 episodes)

Billy

Frank Hawdon

(39 episodes)