The Irregulars

3. One of the lesser known irregulars, mentioned briefly in A Study in Scarlet
5. Anachronistic chemical referenced by Holmes in 'Gloria Scott' case
6. Rare stage play 'The Adventure of the __ Sherlock Holmes',
10. Many original Paget works are held at this public library, in Canada's largest city
13. Sherlock's young assistant in the animated series 'Sherlock Yack, Zoo Detective'
14. Stage actress who played Irene Adler in a 1901 touring production
16. The pseudo-client in The Problem of Thor Bridge, whose real identity is revealed late
17. Minor antagonist in The Adventure of Wisteria Lodge
18. Rare BBC prop item, belonging to Cushing, used 1960s TV series.
19. Gossip columnist in 1991 video game 'Sherlock Holmes: Consulting Detective'

1. Doyle’s short story referencing the original Reichenbach Falls publication date
2. Doyle appeared as himself in a photograph in the lost 1914 film 'The $5,000,000 __ Plot'
4. Holmes actor in the 1930 American radio series, second and third episodes only
7. The ship’s name in The Adventure of Black Peter
8. Doyle’s spiritualist lecture city, given at Mount Royal Hotel
9. In the CBS series Elementary, Alfredo ___ is a character who acts as Holmes's sponsor in his recovery from addiction.
11. Doyle’s own name for a “lost” story, 'The Case of Count Von und Zu __', briefly mentioned in His Last Bow
12. 1946 radio play "The Telltale Pigeon Feathers," Mycroft asks Sherlock to investigate a woman who believes her tenant is a ___.
13. Key character in 2016 video game Sherlock Holmes: The Devil's Daughter.
15. Neville St. Clair's alter ego in "The Man with the Twisted Lip"