In Victorian London, when Montmorency and his alter ego, Scarper, reunite with Dr. Farcett, the two cooperate to capture a bomber and become involved in solving the mystery of the poisoning of a village of Scottish children.
A young boy, Paolo, and the man who murdered his parents, Angel, gradually become like father and son as they live and work together on the remote Chilean farm where Paolo was born.
Young William Bonney is talked into committing his first train robbery, unaware that his cousin and best friend, Willie Monroe, is now sheriff of the nearest town, and that his fellow robbers are already wanted in four states.
Daredevil eleven-year-old Billie has an exciting summer, in spite of her overprotective stepfather, when she figures out where her father and uncle are hiding after robbing a bank and enlists her cousin's help in convincing them to surrender.
When Arf can't resist temptation and opens a package meant for his neighbor, its contents lead him to more trouble, a couple of crooks, and a buried treasure.
