About
Irene Adler is the protagonist in a series of historical suspense novels by American novelist Carole Nelson Douglas . Irene Adler is the only woman to ever outwit Sherlock Holmes . Aside from her sleuthing, she is an opera singer. Although Adler is American, the series is set in 19th century France. The character is portrayed by Rachel McAdams in the Sherlock Holmes film series (alongside Robert Downey, Jr.).
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