Constable Benton Fraser, an officer of the Royal Canadian Mounted Police, is attached to the Canadian consulate but works with Chicago Police Department to solve crimes.

Kate Soffel is married to a prison warden in Pittsburgh, and is the mother of their four children. Ed Biddle is a convicted murderer awaiting execution on death row with his brother Jack. When Kate meets Eddie through her Bible readings to the prisoners, she is drawn to him, and they pursue a clandestine relationship. She agrees to help the brothers escape, and begins a treacherous journey with them to freedom in Canada.