When Rosamond looks into her crystal ball to read Nate the Great's future, she sees a new case for him to solve--her money box is missing and she wants him to find it.

Nancy Drew's keen mind is tested when she searches for a missing will.

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

Assisted by his dog Sludge, Nate the Great, boy detective, agrees to find his friend Claude's lost grocery list before lunch.

"A year after the Bayview four were cleared of Simon Kelleher's death, a new mystery has cropped up--a game with dangerous consequences that's targeting students at Bayview again. And if the creator isn't found soon, dangerous could prove deadly"-- Provided by publisher.

Detectives-in-training Milo and Jazz must put their skills to the test to solve the mystery of how the water in the town swimming pool turned purple.

When the quest to find a cure to an epidemic targeting the citizens of New Mouse City is sabotaged, Geronimo Stilton must figure out who's behind it all before he ends up covered in blue spots too.

Nate the Great, famous boy detective, enters his dog Sludge in the smartest pet contest, but the preparations are interrupted when the prize disappears.

The town's ten-year-old walking encyclopedia again solves ten neighborhood mysteries. The final solutions to the cases are at the back of the book, giving the reader a chance to compare his skill to that of Encyclopedia Brown.

"The Keepers of the School--known to their friends as Ben, Jill, and Robert--have one last chance to save their school before it's torn down to make room for a seaside amusement park. But their nemeses, janitors Lyman and Wally, are just as determined to keep the kids out of the way and the demolition on schedule"-- Provided by publisher.