Code of the Northwest (1926)

Pvt. Frank Stafford of the Northwest Mounted Police is sent to bring in his brother, Donald, who is wanted for murder and wife desertion. The trail leads toward the cabin of Sandy McKenna, a blind old widower who lives with his daughter, Lorna, and Jeanie, who has married Donald against McKenna's wishes. McKenna, however, welcomes Clay Hamilton, Lorna's sweetheart, accompanied by Sandow, his police dog, who rescues Jeanie from attempted suicide. Donald evades the police but is found by Sandow and brought to Jeanie's cabin. Pursued by Clay, Donald overcomes him, but Sandow unbinds his master and rescues him after saving Jeanie from the rapids. Frank and Donald fight aboard a raft heading for the rapids; Donald is killed when thrown from the raft, but Frank makes it to shore.