mystery and detective stories

When Bess's lucky horseshoe earrings disappear, Nancy helps solve the mystery.

The inhabitants of Morgan's Quarry try to keep the town's secrets from the Hardy Boys.

Nancy investigates when her horse Star vanishes from Galloping Grits Dude Ranch.

Now in fifth grade, Drake Doyle and Nell Fossey continue to combine their detective and scientific investigation skills to solve a variety of cases, involving a noisy laundry chute, a ruined flower show, and a ghost.

Penguins Gus and Gertie take part in the Animals' Winter Olympics.

Sam suspects that spies are using the Grand Hotel.

Sam investigates when three strange women with caged animals move next door.

Ten-year-old Jennie Levinsky has a secret--and only her best friend, Beth, knows about it. Jennie can "hear" what her new neighbor's sheepdog, Sam, is thinking!.

When Sam and her friends find an old diary, they discover some surprising secrets and begin to wonder if there is a monster living in their lake.

Dog detectives Clancy and Lu investigate to see if Aunt Lizzy is really a spy.