Sergeant Ken Strange, of the Canadian Mounted Police, and his dog, King, are on the trial of the murderer.
| Actor | Role |
|---|---|
 Edgar EdwardsSgt. Ken Strange | Sgt. Ken Strange |
 Sheila BromleyElsie Barlow | Elsie Barlow |
| JJames McGrathPuffy Puffett | Puffy Puffett |
 Jameson ThomasRobert Druid, alias Herbert Barlow | Robert Druid, alias Herbert Barlow |
 Walter ByronAl Norton | Al Norton |
| RRin-Tin-Tin Jr.King | King |
| AArthur KerrBart Norton (Foreman) | Bart Norton (Foreman) |
| DDorothy BradshawMartha Barlow | Martha Barlow |
| RReginald HincksFreddy (the Old-Timer) | Freddy (the Old-Timer) |
| VVivian CombeMaggie | Maggie |