America's Sherlock Holmes in sneakers continues his war on crime in ten more cases, the solutions to which are found in the back of the book.

With a kindly new headmaster at Rookwood School, Scarlet and Ivy hope to focus on learning more about their mother but weird things start happening after a new ballet teacher arrives.

While searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.

Suspecting that their friend has been swindled, the Hardy brothers investigate and find themselves on the trail of a much larger criminal operation.

When his cousin is captured by the king of the dragons, Geronimo must deliver the Crown of the Seven Rubies to free him.

Arthur Bash is the school thug-for-hire (paid in candy bars), mostly because he just looks the part, so when orphan Darius Drake offers him three candy bars to accompany him to the run-down Stompanado Housing Complex, and just look menacing, he agrees--and soon finds himself deep in a mystery involving Darius' estranged grandfather, the lost Dunbar Diamonds, and the villainous Jasper Jones.

It looks like Evaline Waters, a River Heights resident, is knee-deep in trouble. A huge corporation is suing her for her land; they want to tear down her house and put up a warehouse. And documentation of the zoning law that would protect Evaline's right to keep her land is missing. Figures! I've got to find that document, but it's hard to focus on the land when I'm cruising at ten thousand feet. See, Ned and I are taking flying lessons, him with...

Volume 3 in the mind-bending new series from Gene Luen Yang! Hopper never dreamed that there was a connection between the Bee School and her missing father -- but it turns out that Albert Gracie was also a student of this mysterious coding school. His disappearance can only be the work of Dr. One-Zero. Once a star pupil of the Bee School, Dr. One-Zero is now a green-skinned villain on the hunt for "the most powerful turtle in the world." And the coders...

In the tiny northern town of St. Polonius, everyone over the age of twelve falls asleep after the traditional tasting of the Sacred Bear Liver at the Founders' Day Festival, leaving the children in charge, including Jean who tries to solve the mystery.

Five murder suspects are invited to the haunted Barclay Hotel for a weekend getaway, and it is up to twelve-year-old JJ and eleven-year-old Penny--and a lonely ghost--to figure out who committed the crime.