MYSTIQUE

Thursday, October 22, 2026Earth-616 canonImmortal X-Men #8 (2022)

Today's Fact

Verified against multiple independent sources. Issues cited below.

MYSTIQUE WAS SHERLOCK HOLMES — 221B BAKER STREET WAS A MUTANT SAFEHOUSE!
The Featured Fact

In Immortal X-Men #8 (2022), by Kieron Gillen & Michele Bandini, Marvel made it canon: in 1890s London, Mystique worked as a consulting detective out of 221B Baker Street — brown cape, deerstalker, male form — in other words, Sherlock Holmes. The Marvel Database lists the flashback character, without blinking, as "Sherlock Holmes / Mystique (Raven Darkhölme)."

And the other half of the act was her wife. Destiny is Irene Adler — not just named after Conan Doyle's Adler, but the Adler, the one person who outsmarted Holmes. Behind the scenes, the detective's impossible deductions were powered by Destiny's precognition: she saw what would happen, and "Holmes" took the credit with theatrical deductions. Even Mystique's surname winks at it — Darkhölme.

The Holmes years were working years, not retirement. From Baker Street, the pair investigated Nathaniel Essex — the future Mister Sinister — in 1895 London, which is why the issue is titled "The Curious Case of Dr. Essex and Mr. Sinister." Mystique chose a male detective's face because Essex and Scotland Yard would talk freely to "a man of wit" — and dismiss Destiny outright. The disguise was the investigation's master key.

Why It's Obscure

Claremont seeded the joke in the 1980s — a consulting detective named Raven, a lover named Irene Adler. It took until 2022 for Marvel to stop implying it and just print it: the greatest detective in fiction was a blue shapeshifter working cases with her precognitive wife.

1895
London, in-story — Mystique and Destiny, already together, relocate to London. Raven takes rooms at 221B Baker Street and builds a reputation as a consulting detective. Victorian clients would not hire a woman — so she simply wasn't one, on the clock.
1980s
Claremont plants the clues — Destiny debuts in Uncanny X-Men #141 (1981) named Irene Adler; later stories have Sage find that Destiny sought out a "consulting detective" named Raven Darkhölme. For forty years it stayed a wink for readers paying very close attention.
2022
Immortal X-Men #8 — canon at last — Gillen & Bandini draw the line explicitly: cape, deerstalker, Baker Street, and the quote the Database records: "The game's afoot, Irene. Our game." — Sherlock Holmes / Mystique. Polygon's headline: "Marvel just made Sherlock Holmes one of the X-Men."
1895
The Essex case — As Holmes, Mystique gets Nathaniel Essex talking — the man who will become Mister Sinister — while Destiny steers events with visions of his cloning future. The detective story is secretly the origin of Sinister.
Trivia
Why it works — A shapeshifter is the perfect Holmes: any disguise, any voice, any suspect's face. And a precognitive partner is the perfect explanation for deductions no human could actually make. Elementary — she was cheating, beautifully, the entire time.

Sources

Every claim above is verified against at least two of these independent sources.

Bullpen Bulletins

  1. X-Men Confirmed That a Mutant Was a Classic Literary Figure — CBRVerifies: Immortal X-Men #8; Mystique's late-19th-century London detective identity in cape and deerstalker at 221B Baker Street, modeled on Sherlock Holmes.
  2. Immortal X-Men Vol 1 #8 — Marvel DatabaseVerifies: the featured flashback character listed as "Sherlock Holmes / Mystique (Raven Darkhölme)," the quote "The game's afoot, Irene," 221B Baker Street, and the Dr. Essex / Mr. Sinister plot.
  3. Marvel Just Made Sherlock Holmes One of the X-Men — PolygonVerifies: "What was once implied is now canon: Mystique was Sherlock Holmes, and her detecting prowess came directly from Destiny's clairvoyant sight."
  4. Mystique (character) — WikipediaVerifies: Mystique, stated to be over 100 years old, commonly lives as Raven Darkhölme, "having previously used Sherlock Holmes."