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Top 15 mystery books for ages 9 to 13

Middle-grade mysteries give kids more to hold: puzzles with clues, red herrings and a final twist. Some, like The Westing Game, reward a second read. The Sherlock Holmes entries at the end are for confident older readers.

Titles were chosen from award winners, ALSC notable lists and long-running library favorites, then each title and author was checked against Open Library in Oct 2026. Checked 2026-10-25. Nobody paid to be here. The buy links are plain search links, not affiliate links, so Peabody earns nothing from them.

  1. The Westing Game

    Ellen Raskin · Ages 10-14

    Sixteen heirs are paired up to solve the riddle of a millionaire's death. Newbery winner and a classic puzzle book.

    Watch for: A few deaths and some dated stereotypes.

    Buy: Bookshop.org · Amazon

  2. From the Mixed-Up Files of Mrs. Basil E. Frankweiler

    E. L. Konigsburg · Ages 8-12

    A sister and brother run away to the Metropolitan Museum of Art and try to solve the mystery of an angel statue. Newbery winner.

    Buy: Bookshop.org · Amazon

  3. Chasing Vermeer

    Blue Balliett · Ages 9-12

    Two sixth graders try to find a stolen painting. Includes puzzles in the typeface and art history.

    Buy: Bookshop.org · Amazon

  4. Greenglass House

    Kate Milford · Ages 9-13

    A winter break at an inn for smugglers turns into a hunt for secrets. Atmospheric and long.

    Buy: Bookshop.org · Amazon

  5. Framed!

    James Ponti · Ages 9-12

    Florian uses lessons from a Smithsonian expert to solve a New York case with the FBI. Fast and clue-heavy.

    Buy: Bookshop.org · Amazon

  6. Enola Holmes: The Case of the Missing Marquess

    Nancy Springer · Ages 10-14

    Sherlock's teenage sister goes to London to find a missing lord. First of a series made into films.

    Buy: Bookshop.org · Amazon

  7. Murder Most Unladylike

    Robin Stevens · Ages 9-13

    Two girls at a 1930s boarding school investigate a murder. Cozy-mystery tone.

    Watch for: A teacher is killed; it is mild by the standards of detective fiction.

    Buy: Bookshop.org · Amazon

  8. The Name of This Book Is Secret

    Pseudonymous Bosch · Ages 8-12

    Cass and Max-Ernest investigate a missing scientist. The narrator keeps telling readers to put the book down.

    Buy: Bookshop.org · Amazon

  9. Three Times Lucky

    Sheila Turnage · Ages 9-13

    Mo, an eleven-year-old who was washed up in a flood, helps her friend Dale investigate a murder in a small North Carolina town. Newbery Honor.

    Watch for: A death and a hint of danger.

    Buy: Bookshop.org · Amazon

  10. Book Scavenger

    Jennifer Chambliss Bertman · Ages 9-13

    Emily moves to San Francisco and joins a game of hidden books and ciphers. Puzzle-heavy.

    Buy: Bookshop.org · Amazon

  11. The London Eye Mystery

    Siobhan Dowd · Ages 9-13

    A boy disappears from the London Eye Ferris wheel and his cousin Ted, who has a different way of thinking, helps find him.

    Buy: Bookshop.org · Amazon

  12. Escape from Mr. Lemoncello's Library

    Chris Grabenstein · Ages 8-12

    Twelve children are locked in a game library and must solve clues to get out. Light and quick.

    Buy: Bookshop.org · Amazon

  13. The Parker Inheritance

    Varian Johnson · Ages 10-14

    Candice finds a letter that leads to a puzzle linked to a racial injustice from the town's past. A treasure hunt with a heavy history.

    Watch for: Racism and a lynching are discussed in the town's history.

    Buy: Bookshop.org · Amazon

  14. The Adventures of Sherlock Holmes

    Arthur Conan Doyle · Ages 11+

    Twelve classic short stories. Choose a good annotated or illustrated edition for younger readers.

    Watch for: Some Victorian attitudes.

    Buy: Bookshop.org · Amazon

  15. The Hound of the Baskervilles

    Arthur Conan Doyle · Ages 11+

    Holmes and Watson face a legendary hound on the Devon moor. The most-read Holmes novel, and spooky.

    Watch for: A death and menace.

    Buy: Bookshop.org · Amazon

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