Sgt. Don Roberts (as Bill Henry)
Kay Conway
Marlof
Beck
Commissioner Morrison [Chs.1,10-12]
Reed
Anderson [Chs.1-5, 10]
Constable Clark [Ch.12]
Jed Larson [Ch.2-5]
Warner [Chs.1-5, 10]
Cpl. Guy Sanders [Chs. 1, 5-7]
Mac [Ch.8]
Betty Warner [Chs.1-5, 10]
Ed Olson [Chs.1-5] (uncredited)
Cub (archive footage) (uncredited)
Settler (uncredited)
Henchman (archive footage) (uncredited)
Constable Mills [Ch.6] (uncredited)
Ed Peters - Boat Renter [Ch.9] (uncredited)
Murphy - Old Timer [Ch.1] (uncredited)
Mason - Henchman [Ch.1-2, 10] (uncredited)
Mailman [Ch.5] (uncredited)
Roadblock Officer [Ch.11] (uncredited)
Launch Heavy 2 [Ch.6] (uncredited)
Mr. Turner - Settler [Ch.1-5] (uncredited)
Bartender [Ch.1, 10] (uncredited)
Mrs. Anderson [Chs.1-5, 10] (uncredited)
Launch Heavy 1 [Ch.6] (uncredited)