The House of Silk

Answers

1. Professor Moriarty.

2. He was an engineer. He lost his thumb. (The Engineer’s Thumb)

3. They were all animals.

4. Mary Morstan.

5. Stories in which Mycroft Holmes appears or gets a mention.

6. It’s the only Holmes story told in the third person.

7. 17. (The Six Napoleons, The Three Students, The Three Gables, The Five Orange Pips).

8. There were seventeen steps to Holmes’s rooms.

9. Colonel Sebastian Moran (The Empty House).

10. Dr John Watson. The others have no Christian names.