It's September 1923 and Detective D.B. Murphy has inherited Owen Sound's biggest bootlegging operation. Someone is stealing the proceeds, and D.B.'s efforts to discover the identity of the crook sets him on his biggest case ever! Bank robbery, hijacking and murder are the order of the day when D.B. runs afoul of criminals from Owen Sound and Southampton to the ultimate playground of the well-to-do, Mackinac Island.
