Author Information
Y.S. Lee's Latest Book

Newest Release

  • Bibliography:
    8 Books (1 Series)
  • First Book:
    March 2010
  • Latest Book:
    April 2025
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Full Series List in Order

The Agency

1 - A Spy in the House (Mar-2010)
2 - The Body at the Tower (Aug-2010)
3 - The Traitor in the Tunnel (Mar-2012)
4 - Rivals in the City (Mar-2015)

Book List in Order: 8 titles



  • Introducing an exciting new series! Steeped in Victorian atmosphere and intrigue, this diverting mystery trails a feisty heroine as she takes on a precarious secret assignment. Rescued from the gallows in 1850s London, young orphan (and thief) Mar...



  • Mary's second adventure as an undercover agent forces her to relive some harrowing childhood experiences as she seeks the identity of a murderer. Mary Quinn is back, now a trusted member of the Agency, the allfemale detective unit operating out of...



  • This is the third colourful and action-packed Victorian detective novel about the exploits of agent Mary Quinn. Queen Victoria has a little problem: a series of petty thefts from Buckingham Palace. She calls the Agency for help, and they put Mary Qui...



  • Get steeped in suspense, romance, and high Victorian intrigue as Mary goes undercover at Buckingham Palace - and learns a startling secret at the Tower of London. Queen Victoria has a little problem: there's a petty thief at work in Buckingham Pal...



  • In a tale steeped in action, romance, and the gaslit intrigue of Victorian London, Mary Quinn’s detective skills are pitted against a cunning and desperate opponent. Mary Quinn has a lot on her mind. James Easton, her longtime love interest, wan...




  • A dozen years ago, a random soldier solved the mystery of the Twelve Dancing Princesses’ nightly adventures, married the eldest princess, and became heir to the kingdom. The problem? He turned out to be a complete bastard. This is the story of what...



  • Alice and Mrs. Nobody love getting up to no good. While giving each other fashionable haircuts, belting nighttime duets, or scribbling magic-marker wall murals, the two friends are inseparable. Until the day they disagree on what to play next.  ...




Frequently Asked Questions (FAQ)

Y.S. Lee has published 8 books.

The next book by Y.S. Lee, Mrs. Nobody, will be published in April 2025.

The first book by Y.S. Lee, A Spy in the House, was published in March 2010.

Yes. Y.S. Lee has 1 series.