5th and 6th Graders: Mysteries and Thrillers

This list includes titles from the Hartford School 2026 suggested summer reading list, as well as recommendations from staff at the Mount Laurel Library. Remember, you do not need to choose a title from the list; you can fulfill your summer reading obligations by reading any middle grade book.

Updated May 13, 2026
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Mount Laurel Library
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Arden, Katherine
Ebook
New York Times bestselling adult author of The Bear and the Nightingale makes her middle grade debut with a creepy, spellbinding ghost story destined to become a classic. After suffering a tragic loss, eleven-year-old Ollie who only finds solace in books discovers a...
Ali Cross
Patterson, James
Ebook
In this blockbuster story from the world's #1 bestselling author, Alex Cross's son Ali is eager to follow in his father's footsteps as a detective, but when his best friend goes missing, what price will he have to pay to solve the mystery?   Ali Cross has...
The Sherlock Society
Ponti, James
Paper Book
A New York Times bestseller! In the tradition of Nancy Drew, four kids and one grandfather in Miami tackle a decades-old mystery in this first book full of "atmosphere, history, and lively humor" (Publishers Weekly, starred review) in the Sherlock Society middle...
City of ghosts
Schwab, Victoria
Paper Book
From #1 NYT bestselling author Victoria Schwab comes a sweeping, spooky, evocative adventure, perfect for fans of "Stranger Things" and Miss Peregrine's Home for Peculiar Children.A New York Times bestseller!Ever since Cass almost drowned (okay, she did drown, but she doesn't...

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