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Quiz on Sherlock Holmes

20 questions · July 25, 2026

Arthur Conan Doyle's detective has outlived his creator by more than a century, becoming the world's most famous fictional investigator. From the gaslit streets of Victorian London to countless adaptations across stage, screen, and page, Sherlock Holmes continues to captivate audiences with his razor-sharp deductions and unconventional methods. Whether you know him through the original stories or modern reimaginings, there's always more to uncover about the man who set the standard for detective fiction. How well do you know the cases, the characters, and the legacy of Baker Street's most celebrated resident?

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Question 1

Easy

Who created the character of Sherlock Holmes?

Source: Doyle grew so tired of Holmes that he once tried to kill him off to write 'serious' novels.

Question 2

Easy

On which London street does Sherlock Holmes famously live?

Source: 221B Baker Street now houses a museum, even though the address didn't exist when Doyle wrote the stories.

Question 3

Easy

What is the profession of Holmes's loyal companion?

Source: Dr Watson was an army surgeon wounded in Afghanistan before he ever met Holmes.

Question 4

Easy

Which instrument does Sherlock Holmes play to relax?

Source: Holmes owned a Stradivarius he claimed to have bought for a pittance from a pawnbroker.

Question 5

Easy

Which ghostly hound terrorises a family on the Devon moors?

Source: The glowing hound was an ordinary dog painted with phosphorus to fake a supernatural curse.

Question 6

Easy

Who is Holmes's brilliant criminal nemesis?

Source: Moriarty appears in only two stories yet became the template for the supervillain mastermind.

Question 7

Easy

Who runs the lodging house where Holmes and Watson stay?

Source: The long-suffering Mrs Hudson tolerated indoor pistol practice and chemistry experiments.

Question 8

Easy

Which woman is famously remembered by Holmes as 'the woman'?

Source: Irene Adler outwitted Holmes, and he kept her photograph as a reminder of his rare defeat.

Question 9

Easy

Which novel marks the very first appearance of Sherlock Holmes?

Source: A Study in Scarlet introduced Holmes in 1887 but barely sold until later stories made him a sensation.

Question 10

Easy

Which Scotland Yard detective frequently turns to Holmes for help?

Source: Lestrade is the recurring Yard man, though Holmes considered Gregson and him 'the pick of a bad lot'.

Question 11

Medium

What is the name of Sherlock's even smarter older brother?

Source: Mycroft was so lazy he co-founded the Diogenes Club, where talking to members was forbidden.

Question 12

Medium

At which waterfall does Holmes seemingly plunge to his death with Moriarty?

Source: Public outrage at Holmes's 'death' was so fierce that Doyle was forced to bring him back years later.

Question 13

Medium

Which famous Holmes cipher uses little stick-figure men as its symbols?

Source: The childish stick-figure drawings were actually a substitution code spelling out deadly threats.

Question 14

Medium

In which country was Doctor Watson wounded before meeting Holmes?

Source: Watson's old war wound famously migrates between his shoulder and his leg across the stories.

Question 15

Medium

What does Holmes call his network of street-children informants?

Source: These ragged children could 'go everywhere and hear everything' without arousing suspicion.

Question 16

Medium

What occupation did Holmes adopt while in disguise during his fake death?

Source: Holmes claimed to spend his 'dead' years travelling Tibet under the name Sigerson, the Norwegian explorer.

Question 17

Medium

Which secret society drives the plot of 'The Five Orange Pips'?

Source: Doyle used the real-life Klan as the menace sending its deadly warning of orange pips.

Question 18

Hard

Which real Edinburgh surgeon inspired Holmes's deductive method?

Source: Doyle's teacher Joseph Bell could diagnose a stranger's job and history from a single glance.

Question 19

Hard

Which collection's stories were the last Doyle wrote about Holmes?

Source: The Case-Book closed the canon in 1927, with Holmes by then keeping bees in retirement.

Question 20

Hard

Who was the colonel serving as Moriarty's right-hand assassin?

Source: Crack marksman Moran hunted Holmes with a silent air-gun built to fire revolver bullets.

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