The houses of all Three (not-so-) Little Pigs were broken into and ransacked, and the Pigs are squealing for justice. So Prince Tyrone, ruler of Fairylandia, drags in the obvious suspect: Wolfgang. The lone wolf has big teeth, sharp claws, no alibi -- and a single day to find the real culprit and clear his big bad name. When Wolf (reluctantly) teams up with the fourth Little Pig to crack the case, the Big Bad Detective Agency is born.

A super-sleuth fourth grader solves the case of a neighbor's haunted toolshed. First in the Joe Sherlock series.

King's human, Kayla, has baked some treats for a friend's new puppy, Thor, but some go missing and it is up to King to find the culprit.

When seemingly unrelated and strange events start to happen and a precious Vermeer painting disappears, eleven-year-olds Petra and Calder combine their talents to solve an international art scandal. Follow further adventures of these young detectives in The Wright 3 and The Calder Game.

A watermelon stabbing...a trapeze artist's inheritance...and an eyewitness who's legally blind! These are just some of the mysteries that Encyclopedia Brown solves by using his famous encyclopedic brain. Crack the cases along with him. The answer to all the mysteries are found in the back!

A young girl runs away with her brother to live in the Metropolitan Museum of Art. The two unravel a mystery behind a famous sculpture.

Seventh-graders Jin, Alexandra, and Elvin come from very different backgrounds and circumstances, but they all live in Harlem, and when Elvin's grandfather is attacked they band together to find out who is responsible--and the search leads them to an enigmatic artist whose missing masterpieces are worth a fortune, and into conflict with an ambitious politician who wants to turn Harlem into an historic amusement park.

When the grandfather he never knew is released from prison suffering from dementia, eleven-year-old Nicholas, a mathematical and musical genius, tries to save the family's home by helping search for heirlooms Grandpa claims to have buried.

Eli Frieden convinces his friends to help him investigate strange occurences in their idyllic town, and soon it becomes clear that nothing is as it seems in Serenity, New Mexico. The clues mount to reveal a shocking discovery, connecting their ideal crime-free community to some of the greatest criminal masterminds ever known. The kids realize they can trust no one—least of all their own parents.

A string of daring burglaries has taken place in BigCity, and precious lapdogs are disappearing. Who is behind this crime wave? Ottoline Brown and her best friend are on the case! Look for more Ottoline titles.

Meet Nancy Drew, the most famous girl detective, in the first book of this classic mystery series. In this mystery, Nancy uses her keen mind to find a missing will.

Twelve-year-old Ben Ripley leaves his public middle school to attend the CIA's highly secretive Espionage Academy, which everyone is told is an elite science school.

Receiving reports that three children with their names and birthdates have been kidnapped, three siblings investigate complex codes, hidden rooms and a dangerous secret that turns their lives upside down.

Both Mason and his new friend, tiny Calvin Chumsky, are relentlessly bullied by the other boys in their neighborhood, so they create an underground club space for themselves. When Calvin goes missing, Mason finds himself in trouble again. He’s desperate to figure out what happened to Calvin, and eventually, Benny. But will anyone believe him?