Who is Mary Morstan in Sherlock?

The nurse with a past · 221B Baker Street

Mary Morstan (The nurse with a past) is a character in Sherlock, part of 221B Baker Street. Mary Morstan is the woman who put John Watson back together after the grave: a clever, wickedly funny nurse who likes Sherlock immediately — and, more unusually, is liked back. She navigates the world's strangest love triangle with grace, reading both men better than they read themselves, and becomes the rare addition to Baker Street that makes it stronger rather than smaller.

When does Mary Morstan first appear?

Mary Morstan first appears in Season 3, Episode 1 (“The Empty Hearse”) of Sherlock (2010–2017, BBC).

Who is Mary Morstan connected to?

Relationships already established when Mary Morstan first appears — nothing from later episodes.

• John Watson — Engaged after the grave years

Which group does Mary Morstan belong to?

By the time Mary Morstan appears, 221B Baker Street also includes Sherlock Holmes, John Watson, Mrs Hudson.

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