Nate and his dog Sludge try to solve a case on Halloween night and find themselves locked in a haunted house.

While visiting Wallis's castle, Dink and his friends investigate strange noises that lead them to a dangerous secret.

Siblings Evan and Jessie must solve the mystery of a missing cherished family treasure while coming to terms with their beloved granother's unsettling behavior.

For months, Summer is trapped in a cellar with the man who took her and three other girls: Rose, Poppy, and Violet.

This book was never meant to exist. No one needs to know the details. Just know this: there's a Merry, a Larry, a missing tooth, and a teachers' strike that is crippling Timmy Failure's academic future. Worst of all, Timmy is banned from detective work. It's a conspiracy of buffoons. He recorded everything in his private notebook, but then the manuscript was stolen. If this book gets out, he will be grounded for life. Or maybe longer. And will Timmy's...

Contains 34 stories for readers to solve. The solutions can be found by lifting the flaps on the back pages of the book.

Ten brief cases allow the reader to match wits with ten-year-old crime-buster, Encyclopedia Brown, as he recovers a client's missing tooth collection , finds a sneaky thief, and more. Solutions are included at the back of the book.

While their family is away, Harold and Chester, a dog and a cat, are boarded at Chateau Bow-Wow where Chester becomes increasingly alarmed by the strange behavior of his fellow guests and the sudden disappearance of one of them.

Nate the Great and his cousin Olivia are on the case of a runaway turkey, but unfortunately the clues appear to contradict each other.

Shuffle, the pug, gets mugged. Then, when Red's collar is stolen, Jack knows he has a case on his paws.