While visiting a ranch near Yellowstone National Park with his parents, Summer, and her parents, Teddy Fitzroy investigates the disappearances of bison and an irreplaceable necklace.

Eva's teacher, Miss Featherbottom, is getting married, but when her special necklace disappears, Eva and her friends set out to track down the thief and return the necklace before the wedding.

Dink, Josh, and Ruth Rose help catch the thieves who have stolen the treasure from the museum's mummy exhibit.

Griffin Bing is in big trouble when a Super Bowl ring disappears from his middle school's display case, replaced by Griffin's retainer, and the more he and his friends investigate, the worse his situation becomes.

Danny Dragonbreath and his friends try to help the senior reptiles of Sunny Acres find a lost item.

Using her excellent memory, Cam Jansen, aided by her friend Eric, investigates the disappearance of Mrs. Scott's valuable pearl necklace during a charity brunch.

Cousins Kate and Mike visit Kate's father, a baseball scout for the Dodgers, in Los Angeles just as a series of suspicious events lead him to think that someone is trying to steal his scouting reports.

While spending two days touring a zoo to see the baby animals, the four Alden children, aged six to fourteen, help catch an escaped monkey, participate in a photography contest, and investigate a missing camera.

Thirteen-year-old aspiring lawyer Theodore Boone is falsely accused in a robbery and must fight to clear his name.

"Following the death of her closest friend in summer 1968, Meryl Lee Kowalski goes off to St. Elene's Preparatory Academy for Girls, where she struggles to navigate the venerable boarding school's traditions and a social structure heavily weighted toward students from wealthy backgrounds. In a parallel story, Matt Coffin has wound up on the Maine coast near St. Elene's with a pillowcase full of money lifted from the leader of a criminal gang, fearing...