Young Sherlock' creator Matthew Parkhill on Sherlock Holmes' and Moriarty's friendship, casting Joseph Fiennes, his multi-season plan and the key.
In Young Sherlock, Sherlock and Moriarty are not yet enemies, but are friends, a bond that actor Dónal Finn — who plays Moriarty — says was inspired by the duo in the 1969 Western film Butch Cassidy ...