River’s End

Keith is the escaped murderer who bears a striking resemblance to Sergeant Conniston. After seizing Conniston’s gun, he grapples with guilt and seeks redemption by helping the others, even as he lives a dangerous double life. His romance with Miriam adds humanity to a dangerous deception, complicating his fate. He ultimately faces a choice between fleeing across the border and confessing the truth.

Louise is a supporting character in River's End whose role is not detailed in the summary. Her presence contributes to the social fabric of the northern community and interacts with the main cast within the film's broader frontier setting.

Eskimo is a minor character encountered in the northern Canadian setting, representing the frontier milieu. The summary does not specify actions, but his presence underscores the film's geographic and cultural backdrop.

O'Toole is a guide who accompanies Keith and is described as constantly drunk. He becomes a catalyst by coaching Keith to impersonate the sergeant and by revealing the truth about Conniston’s innocence. His unstable behavior adds tension while revealing a complex loyalty to truth and to those he guides.

A senior Mountie at the RCMP post who embodies the frontier code and authority. He represents the institutional perspective and pushes the plot toward truth and consequences once deception unfolds.

Shotwell is a character within the post-frontier dynamic; the summary does not detail his actions, but his presence contributes to the film's web of relationships in this austere setting.

Tom London's Mountie participates in the enforcement of law and the frontier code that shapes the story's outcomes. He helps drive the narrative through duty and procedure.

McDowell is the post commanding officer who learns of Conniston's murder and ultimately reveals the truth to Miriam. He anchors the plot with a sense of official truth and accountability.

Another Mountie within the post's environment, contributing to the enforcement of law and the frontier code that shapes the story's outcomes.

A Mountie whose role adds to the institutional perspective on pursuit, confession, and legal consequences in the frontier setting.

Mickey is O'Toole’s young son who has adopted Conniston as a substitute father. He forms a bond with Keith and gradually learns the truth, choosing to keep Keith’s secret and supporting a possible reconciliation.

Alice Belcher’s character appears in the frontier town's social sphere during dances, contributing to the film’s interpersonal dynamics.

Miriam is McDowell's daughter and Keith's love interest. She becomes entangled in the film's romantic tension and the tension between truth and deception, choosing to stand by the man she loves even as secrets threaten her future.

Tiny Jones participates in the social life of the frontier town's dances, adding to the film's human element.

Martin is a member of the frontier community whose presence helps texture the film's social world; the summary does not provide specific actions, but he is part of the ensemble.