Harry Scott (played by James Franciscus) is a protagonist in Puzzle.
Claudine Cunningham (played by Wendy Hughes) appears in Puzzle.
Shepherd (played by Robert Helpmann) appears in Puzzle.
Diana Carson (played by Kerry McGuire) appears in Puzzle.
Det. Sgt. Knox (played by Peter Gwynne) appears in Puzzle.
Garrett (played by Gerard Kennedy) appears in Puzzle.
Det. Insp. Dixon (played by Ken Goodlet) appears in Puzzle.
Rantz (played by Shane Porteous) appears in Puzzle.