Sherlock Holmes Trivia: 30 Questions and Answers

Sherlock Holmes is back in the spotlight: Enola Holmes 3 began streaming on Netflix on July 1, 2026, with Henry Cavill returning as the world's most famous detective and Millie Bobby Brown as his sharp younger sister. QuizVault is a free personality-test and trivia site you can play with no signup, giving a shareable result in minutes plus a daily quiz, so we gathered 30 Sherlock Holmes trivia questions and answers spanning the new film, Arthur Conan Doyle's original stories, the characters of 221B Baker Street, and the myths people still get wrong.

Fancy sorting yourself instead of testing facts? Find out Which Classic Book Character Are You?, a personality quiz where Sherlock Holmes is one of the results. If it is Holmes's pure deduction that draws you in, try What's Your Brain Type? or What's Your MBTI Personality Type?. Use the questions below as a quiz-night round, a warm-up before the Netflix film, or a quick self-check. Each answer sits right under its question.

Enola Holmes 3 and Sherlock on screen

1. Who plays Sherlock Holmes in Enola Holmes 3? Henry Cavill, reprising the role from the first two films.

2. Who stars as Enola Holmes, Sherlock's younger sister? Millie Bobby Brown.

3. On which streaming service did Enola Holmes 3 premiere in July 2026? Netflix, on July 1, 2026.

4. Which actor plays Dr. John Watson in Enola Holmes 3? Himesh Patel.

5. Who plays Sherlock's arch-enemy Moriarty in Enola Holmes 3? Sharon Duncan-Brewster.

6. According to Guinness World Records, Sherlock Holmes holds the record as the most portrayed what? The most portrayed literary human character in film and television.

The author and the canon

7. Who created Sherlock Holmes? Sir Arthur Conan Doyle, a Scottish writer and physician.

8. In which 1887 novel did Sherlock Holmes first appear? A Study in Scarlet.

9. How many novels and short stories make up the original Sherlock Holmes canon? Four novels and 56 short stories, 60 works in total.

10. Which real-life surgeon inspired the character of Sherlock Holmes? Dr. Joseph Bell, Conan Doyle's teacher at the University of Edinburgh, famous for diagnosing patients by observation alone.

11. Which Sherlock Holmes novel features a demonic hound stalking a family on the moors? The Hound of the Baskervilles.

12. In which Swiss waterfall did Holmes seem to plunge to his death alongside Moriarty? The Reichenbach Falls, in the story The Final Problem.

221B Baker Street and the characters

13. What is Sherlock Holmes's famous London address? 221B Baker Street.

14. Who is Holmes's loyal friend, flatmate, and biographer? Dr. John Watson.

15. Who is the landlady at 221B Baker Street? Mrs. Hudson.

16. What is the name of Sherlock's smarter but far lazier older brother? Mycroft Holmes, who helped found the Diogenes Club.

17. Which criminal mastermind is Holmes's greatest enemy, described as the Napoleon of crime? Professor James Moriarty.

18. Which woman, from A Scandal in Bohemia, does Holmes forever afterward call the woman? Irene Adler, one of the few people ever to outwit him.

Holmes's methods, habits, and cases

19. What musical instrument does Sherlock Holmes play to help him think? The violin.

20. What group of London street children does Holmes hire to gather information? The Baker Street Irregulars.

21. In The Sign of Four, Holmes injects a seven-per-cent solution of which drug? Cocaine.

22. In which war was Dr. Watson wounded before he ever met Holmes? The Second Anglo-Afghan War, at the Battle of Maiwand.

23. What is the murder weapon in The Adventure of the Speckled Band? A venomous snake, a swamp adder trained to slither down a bell-rope.

24. In The Sign of Four, Watson meets and later marries which client? Mary Morstan.

Famous quotes and popular myths

25. Does Sherlock Holmes ever say Elementary, my dear Watson in Conan Doyle's stories? No, the exact phrase never appears in the original canon.

26. What does Holmes exclaim to Watson as a fresh case begins, in The Adventure of the Abbey Grange? The game is afoot.

27. Complete Holmes's famous maxim: When you have eliminated the impossible, whatever remains, however improbable, must be the what? The truth.

28. What crime is really being planned in The Red-Headed League? A bank robbery, hidden behind a bogus job that pays a man to copy out the encyclopedia while thieves tunnel next door.

29. What kind of hat is popularly linked to Holmes, though Doyle never named it in the text? The deerstalker cap, made iconic by illustrator Sidney Paget.

30. What London attraction now occupies the 221B Baker Street address? The Sherlock Holmes Museum.

How to play a Sherlock Holmes quiz online free

Reading trivia is one thing; testing yourself under a little pressure is another. On QuizVault you can play a free character quiz with no signup and get a shareable result in a couple of minutes. If you love Holmes because you see yourself in his relentless logic, Which Classic Book Character Are You? will tell you whether you match Sherlock or another literary icon, and What's Your Brain Type? turns the same curiosity toward how you actually think.

Frequently asked questions

When did Enola Holmes 3 come out?

Enola Holmes 3 started streaming on Netflix on July 1, 2026. Millie Bobby Brown returns as Enola, Henry Cavill plays her brother Sherlock Holmes, Himesh Patel plays Dr. John Watson, and Sharon Duncan-Brewster appears as Moriarty. The plot follows Enola racing to rescue a kidnapped Sherlock on the eve of her wedding to Lord Tewkesbury.

Does Sherlock Holmes ever say Elementary, my dear Watson?

No. The exact phrase Elementary, my dear Watson never appears in any of Arthur Conan Doyle's original stories. Holmes says Elementary and he addresses Watson as my dear Watson separately, but the famous combined line was popularized later by stage plays and films.

How many Sherlock Holmes stories did Arthur Conan Doyle write?

Arthur Conan Doyle wrote 60 Sherlock Holmes works in total: four novels and 56 short stories. The four novels are A Study in Scarlet, The Sign of Four, The Hound of the Baskervilles, and The Valley of Fear. Together they are known to fans as the canon.

What is Sherlock Holmes's address?

Sherlock Holmes lives at 221B Baker Street in London, where he shares rooms with Dr. Watson and rents from his landlady Mrs. Hudson. The address is now home to the Sherlock Holmes Museum, which is built to look like Holmes's Victorian sitting room.

Where can I take a free Sherlock Holmes quiz?

You can play a free character quiz on QuizVault such as Which Classic Book Character Are You, which includes Sherlock Holmes as a possible result. It needs no signup, gives a shareable result in a couple of minutes, and QuizVault also runs a daily quiz plus personality tests like What's Your Brain Type.