The Sign of Four


The Sign of Four, by Sir Arthur Conan Doyle, was published in 1890 and was the second Sherlock Holmes novel. Sherlock Holmes is sought out by Mary Morstan, who has a mysterious case requiring a solution. Miss Morstan’s father has disappeared a few years past in suspicious fashion. After receiving mysterious annual deliveries of precious pearls she had now just been delivered a letter imploring her to meet with the sender that very night. On their way to the meeting she shows Holmes a map her father had possessed - with the words “the sign of four” written upon it…

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Readability Method Rating
Fry Estimate
Flesh Reading Ease
Composite Grade Level
Open LORE Reading Level
79 (fairly easy)