Secret staircase mystery Books in Order

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🎧 Listen to Under Lock & Skeleton Key on Audible

The 'Secret Staircase Mystery' series exists in TPL with four volumes but is absent from bm2. Wikipedia confirms Pandian's authorship of this series.

Publication order

In the order the books were originally released.

  1. Cover of Under Lock & Skeleton Key
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  2. Cover of The Raven Thief

    The Raven Thief

    2023 · Pandian, Gigi

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  3. A Midnight Puzzle

    2024 · Pandian, Gigi

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  4. Cover of The Library Game

    The Library Game

    2025 · Pandian, Gigi

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Frequently asked questions

What order should I read the Secret staircase mystery books in?

Read them in publication order, starting with “Under Lock & Skeleton Key”. Start with “Under Lock & Skeleton Key.”

How many books are in the Secret staircase mystery series?

We list 4 books by Pandian, Gigi , published between 2022–2025.

Where can I buy the Secret staircase mystery books?

Each title above links to Amazon. See our affiliate disclosure.

Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.