When popular Lizzie Lovett goes missing, seventeen-year-old Hawthorne, a lonely misfit, finds herself becoming obsessed with solving the mystery.

Eva Wingdale and her class are excited about their trip to Poppy's Pumpkin Farm, where every year, there is one very large, extra special, thank-you pumpkin; but on the second day of the visit the owls find that the Thank-you Pumpkin has gone missing, and the farm animals are in an uproar -- so Eva and the other owls turn detective to solve the mystery of the missing pumpkin.

A friendly writer with a metal detector, the mysterious inhabitants of a tower house, and the discovery of a locket in the sand are ingredients for the Aldens' latest mystery.

Young Lemony Snicket investigates a rash of fires that have plagued the town of Stain'd-by-the-Sea, revealing secrets that involve the Department of Education and the notorious villain Hangfire.

When eight-year-old Nancy is invited to a sleepover party with a dolls theme, the host's doll goes missing and Nancy tries to solve her first case.

When their favorite author fails to arrive as scheduled to speak at the local library, the Alden children investigate how he could board a train and never be seen again.

Ten brief cases allow the reader to match wits with ten-year-old crime-buster, Encyclopedia Brown, as he investigates such cases as toys missing from a fair, music stolen from a singer-songwriter, and arrowheads that disappear during a campout.

Nancy Drew and her friends investigate a murder case, that involves some members of the university basketball team.

"Twelve-year-old Truly Lovejoy's family moves to a small town to take over a bookstore. Soon, she has to solve two mysteries involving a missing book and an undelivered letter"--Provided by publisher.

At her exclusive boarding school, can super sleuth and girl genius Friday Barnes crack the case of her missing mother, reign in a royal brat, and unmask the elusive master thief called the Pimpernel?