Teenage detectives Frank and Joe Hardy investigate a supposedly haunted house reported to be the hangout of criminals.

Nancy Drew arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch, but abruptly finds herself involved in a baffling mystery. The ranch is being haunted by an unknown enemy. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Aided by her friends Bess...

Nine-year-old Nicholas Benedict, an orphan afflicted with an unfortunate nose and with narcolepsy, is sent to a new orphanage where he encounters vicious bullies, selfish adults, strange circumstances, and a mystery that could change his life forever.

"Four best friends--Kate, Mia, Lainey, and Gabby--travel to Never Land, where they find adventure, friendship, and mystery! When the girls realize that animal talent fairy Fawn is missing, the search is on"--

New friends and a mystery help Aven, thirteen, adjust to middle school and life at a dying western theme park in a new state, where her being born armless presents many challenges. Thirteen-year-old Aven was born without arms and has trouble fitting in at her new school after her parents take a job at a dying western theme park, but she makes a new friend in a fellow disabled boy who helps her solve a mystery at the park.

Accused of ruining a champion dog's career after an unfortunate incident at a mall show, Luthor is sent to the pound, prompting a skeptical Griffin to hatch a daring plan involving a sinister saboteur, a reclusive trainer, and large supply of red dye.

Lemony Snicket investigates his own possible murder after receiving a note under his door stating that his breakfast was poisoned.

Chip, an invisible boy, and his friends investigate the mysterious disappearance of yogurt-covered raisins, mixed nuts, and ginger snaps from their classroom.

Enola Holmes, much younger sister of detective Sherlock Holmes, must travel to London in disguise to unravel the disappearance of her missing mother.

"When Gran and his family move to Carousel, he has no idea that the town is built atop a secret. Little does he suspect, as he walks his sister to school or casually eats a banana, that mysterious forces lurk mere inches beneath his feet, tearing up the earth like mini-hurricanes and causing the town to slowly but surely sink. When Gran's classmate, the difficult-to-impress Catalina Catalan, presses a silver handle into a hillside and opens a doorway...