# Mary Morstan — The Sign of the Four character guide

> Mary Morstan in The Sign of the Four by Arthur Conan Doyle.

**Role:** major

**Also known as:** Miss Mary Morstan, Miss Morstan, Morstan

**First appearance:** 0001-ii-the-statement-of-the-case

## Snapshot

A governess of proud composure who hires Holmes to solve her father's disappearance and receives a fortune in pearls instead.

## Who they are

Mary Morstan arrives at Baker Street with a decade-old mystery and a string of anonymous pearls, carrying herself with a resolute calm that impresses even Holmes. When suspicion falls on Thaddeus Sholto, she defends him fiercely, insisting his kindness matters more than any treasure. Her dignity under pressure and her refusal to be dazzled by wealth anchor the case's moral center.

## Relationships

### [Sherlock Holmes](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/sherlock_holmes)

_professional_

Mary Morstan consults Holmes to solve the mystery of her father's disappearance and the pearl she receives annually.

### [Sherman](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/sherman)

_social_

Mary Morstan accompanies Holmes and Watson to Sherman's to retrieve the dog Toby for the tracking expedition.

### [Mrs. Hudson](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/mrs_hudson)

_social_

Mrs. Hudson provides hospitality to Mary Morstan when she visits Baker Street to consult Holmes.

### [Sherlock Holmes](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/sherlock_holmes)

_professional_

Mary Morstan consults Holmes to solve the mystery of her father's disappearance and the pearl she receives annually.

### [Mrs. Hudson](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/mrs_hudson)

_social_

Mrs. Hudson provides hospitality to Mary Morstan when she visits Baker Street to consult Holmes.

### [Sherman](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/sherman)

_social_

Mary Morstan accompanies Holmes and Watson to Sherman's to retrieve the dog Toby for the tracking expedition.

### [Sherlock Holmes](https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/sherlock_holmes)

_professional_

Mary Morstan consults Holmes to solve the mystery of her father's disappearance and the pearl she receives annually.

## In the story

### [The Science of Deduction](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/i-the-science-of-deduction)

Arrives at Baker Street with a card, seeking Holmes's assistance.

### [II: The Statement of the Case](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/ii-the-statement-of-the-case)

Visits Holmes and Watson to present her father's disappearance and the annual pearl mystery.

### [In Quest of a Solution](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/iii-in-quest-of-a-solution)

Provides the paper found in her father's desk, remains composed and collected despite the strange circumstances, and accompanies Holmes and Watson.

### [IV: The Story of the Bald-Headed Man](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/iv-the-story-of-the-bald-headed-man)

Deeply affected by the account of her father's death, nearly faints but recovers.

### [The Tragedy of Pondicherry Lodge](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/v-the-tragedy-of-pondicherry-lodge)

Remains behind with the frightened housekeeper while Holmes and Watson ascend to the chamber.

### [VII: The Episode of the Barrel](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/vii-the-episode-of-the-barrel)

Weeps in the cab after the night's events; Watson notes her sweet, brave nature and the barrier of her potential wealth.

### [A Break in the Chain](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/ix-a-break-in-the-chain)

Miss Morstan is weary but eager for news, shows no elation at the prospect of wealth, and expresses concern for Thaddeus Sholto.

### [XI: The Great Agra Treasure](https://www.betterreads.dev/discover/the_sign_of_the_four_se/chapters/xi-the-great-agra-treasure)

Receives the treasure box calmly, listens to Watson's story, and expresses relief when the box is empty, reciprocating Watson's love.

## Links

- HTML: https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters/mary_morstan
- Book: https://www.betterreads.dev/discover/the_sign_of_the_four_se
- All characters: https://www.betterreads.dev/discover/the_sign_of_the_four_se/characters