As the new season begins, Murdoch and his colleagues are dealing with the aftermath of the brutal beating of Inspector Brackenreid at the hands of the violent O'Shea brothers. The area remains a contentious and dangerous place as gangs vie for power and extort and murder local merchants. Among the intricate investigations this season, Murdoch joins forces with legendary lawman Bat Masterson in pursuit of notorious bank robbers Butch Cassidy and the Sundance Kid, and becomes the object of adoration for a group of detective admirers. Crabtree and Higgins get to explore their performance aspirations when they go undercover at a vaudeville show featuring a young, fumbling W.C. Fields. Meanwhile, Dr. Ogden and Dr. Grace join forces with Margaret Haile and a group of suffragettes in their quest for the women's vote, only to find themselves in jail and defended by Clara Brett Martin, the first woman lawyer in the British Empire.