Benton and Diefenbaker's street vendor friend Mr. Tucci is killed and while at Mrs. Tucci's, Stanley becomes attracted to her aide Luann. The investigation of the murder is complicated by a missing son, hidden wealth, and mob involvement.

A young constable from the Northwest Territories travels to Chicago on the trail of two murder suspects, asking for Benton Fraser's help. The mounties come to discover they have a lot more in common than they initially thought.