Yukon Manhunt plot
Canadian Mountie Rod Webb must investigate why three messengers with the paychecks from the Kenmore mine were robbed and murdered. Rod travels to the mine by train with Jane Kenmore, the mine owner's niece, the payroll payer Brown, the armed guard Le Clerque, and the young mining engineer Len and his sister Polly. Someone secretly puts chemicals into the ventilation system and in the confusion Brown and the train conductor are killed. Also, after the confusion, the money for the salary payments has disappeared. Rod suspects Kenmore, his cousin Jane and Le Clerque were involved in the theft.