However , all the characters in the play were Gillette 's own creations with the exception of Holmes , Watson , and Moriarty .
Also , it had elements from A Study in Scarlet , The Sign of Four , The Boscombe Valley Mystery , and The Greek Interpreter .
All the characters in the play were Gillette 's own creations with the exception of Holmes , Watson , and Moriarty .
Also , it had elements from A Study in Scarlet , The Sign of Four , The Boscombe Valley Mystery , and The Greek Interpreter .