The River's End - James Oliver Curwood - Bog

Between Conniston, of His Majesty's Royal Northwest Mounted Police, and Keith, the outlaw, there was a striking physical and facial resemblance. Both had observed it, of course. It gave them a sort of confidence in each other. Between them it hovered in a subtle and unanalyzed presence that was constantly suggesting to Conniston a line of action that would have made him a traitor to his oath of duty. For nearly a month he had crushed down the whispered temptings of this thing between them.