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Summer Learning: Young Detectives

Are you ready to be a detective? Let's see if you can apply your sleuthing skills to crack the cases in these mystery chapter books. This list is geared toward Pre-Teens (10-12). Selected by SJPL Staff.

San José Public Library

40 items

  • Follow Mika, a twelve-year-old girl in 1880 Stockholm, as she investigates the disappearance of a wealthy teen and uncovers a dark secret involving the famous killer, the Dark Angel. As she navigates her own family's mysteries, Mika strives to…
    Book, 2025[New York] : Amazon Crossing Kids, [2025] — J FICTION Rundberg
  • After a chaotic semester, Guinevere "Nev" Tallow is looking forward to a quiet winter break at Deephaven Academy. But when they discover a strange artifact--a scrimshaw--hidden away deep in the under-basement of the school, they can't resist the…
    Book, 2024[New York, New York] : Quill Tree Books, [2024] — J FICTION Aldridge
  • After a summer spent solving other people's mysteries, Colin discovers a key in a shoebox on his porch, leading him to investigate his father's past and the reason for his parents' separation. As he and his friend Nevaeh delve deeper into the…
    Book, 2024New York, NY : Quill Tree Books, an imprint of HarperCollins Publishers, [2024] — J FICTION Haddix
  • Twelve-year-old DJ has a reputation at his middle school for being able to solve just about any problem, so when somebody starts systematically sabotaging the kids who are the usual "first-raters" it is up to DJ and his crew to get to the bottom of…
    Book, 2024New York, NY : Scholastic Inc., [2024] — J PB FICTION Howell
  • The City Spies search for Cairo's missing sister in Rome before returning to London to stop an attack on the royal wedding. Book 6 of City Spies.
    Book, 2024New York : Aladdin, 2024. — J FICTION Ponti
  • In 17th century London, fourteen-year-old Christopher Rowe, apprentice to an apothecary, and his best friend, Tom, try to uncover the truth behind a mysterious cult, following a trail of puzzles, codes, pranks, and danger toward an unearthly secret…
    Book, 2024New York : Aladdin, 2024. — J PB FICTION Sands
  • A writer’s conference brings twelve-year-old Lark’s favorite writer—and the suspicious death of her assistant—to Swallowtail Island. Then Lark finds out the assistant had a bird that matches the one she found hidden in her mom’s book—and she needs…
    Book, 2023New York : Pixel+Ink, 2023. — J FICTION Beil
  • Twelve-year-old Myrtle Hardcastle's plans to bring her father and governess together are jeopardized when she investigates a murder and cursed treasure on a Scottish Island and finds herself being hunted by another who will stop at nothing to find…
    Book, 2023New York, New York : Algonquin Young Readers, 2023. — J FICTION Bunce
  • When a thief breaks into the P.E. lockers, leaving behind cryptic ransom notes, Drew Leclair, who is determined to stay out of trouble, investigates while dealing with her friends' obsession with the upcoming Wonderland dance. Book 2 of Drew Leclair.
    Book, 2023New York, NY : Clarion Books, an imprint of HarperCollinsPublishers, 2023. — J FICTION Bury
  • 11 year olds Max and Josie navigate a world where androids called "whatnots" are used to protect children from bullying and antisocial behavior. As they uncover the truth behind the whatnots, they confront the inequalities created by their parents'…
    Book, 2023New York, NY : Katherine Tegen Books, an imprint of HarperCollinsPublishers, 2023. — J PB FICTION Haddix
  • The rain hasn't stopped for a week, and the twelve guests of the Blue Vein Tavern are trapped by flooded roads and the rising Skidwrack River. Among them are a ship's captain, tattooed twins, a musician, and a young girl traveling on her own. To…
    Book, 2023New York, NY : Clarion Books, an imprint of HarperCollins Publishers, 2023. — J PB FICTION Milford
  • Airi Sano, Prankmaster General, has given up her prankster ways. But when the school play falls victim to some truly awful pranks, everyone immediately suspects that Airi is behind them. As suspicion mounts, it's up to her to solve the mystery and…
    Book, 2023New York, NY : Philomel Books, 2023 — J FICTION Tokushig
  • Frank Fernandez's family never stays in one place for long. His parents renovate unusual buildings and turn them into homes, which means the family moves -- a lot. This makes it hard for bookish Frank to make friends. So when his parents announce…
    Book, 2022New York : Balzer + Bray, [2022] — J FICTION Acevedo
  • When best friends Abbi and Skylar witness a clandestine meeting between a mysterious woman and someone in a dark van, they're thrilled. Finally, a mystery to spice up the summer! Who could these people be? Why are they meeting? Are they spies?…
    Book, 2022New York, NY : Clarion Books, an imprint of HarperCollins Publishers, [2022] — J FICTION Hahn
  • Carlos and his friends of the Las Pistas Detective Agency head to Greece to solve a mystery at an archaeological dig. Book 4 of Case Closed.
    Book, 2022New York, NY : Katherine Tegen Books, an imprint of HarperCollinsPublishers, [2022] — J PB FICTION Magazine
  • When Cooper learns of an unsolved mystery his sister discovered online, he welcomes the distraction. It's the tale of a deadly train crash that occurred a hundred years ago in which one young boy among the dead was never identified. The only…
    Book, 2021New York, NY : Walden Pond Press, an imprint of HarperCollins Publishers, 2021. — J FICTION Ansari
  • Willa and her clan are the last of the Faeran, an ancient race of forest people who have lived in the Great Smoky Mountains for as long as the trees have grown there. But as crews of newly arrived humans start cutting down great swaths of the forest…
    Book, 2021Los Angeles : Disney-Hyperion, 2021. — J FICTION Beatty
  • The kids of Winterborne House are the only ones who know that Gabriel Winterborne--famous billionaire and terrible cook--is really a sword-wielding vigilante. What they don't know is that he's not the only one. When a masked figure breaks in,…
    Book, 2021Boston : Houghton Mifflin Harcourt, [2021] — J FICTION Carter
  • No matter how dangerous his adventures have been, Art has always been able to count on his best friend, Camille. Now that Camille is meeting her estranged father, Art wants to be there for her--which means going to London. But Camille's history…
    Book, 2021New York : Clarion Books, 2021. — J FICTION Hicks
  • Middle schooler Elizabeth Webster has a new case for the Court of Uncommon Pleas: a fourth grader who says she and her sister's ghosts were stolen; the case leads her to the Ramsberger Institute of the Paranormal, run by Frederick Ramsberger and his…
    Book, 2021New York : Little, Brown and Company, 2021. — J FICTION Lashner