Mr. J's Pet Haven is losing business to a pet superstore, so he decides to put on a pet show for the neighborhood, and recruits Kyle and Mia to help.

Twins Bick and Beck Kidd and their family of professional treasure hunters race against mercenaries, rival treasure hunters, and a lumber baron through the jungles and mountains of Peru in search of Paititi, the legendary lost Inca city of gold, in hope of conserving the archaeological treasure and preventing deforestation of the rain forest.

A month has passed since the incident of the haunted hockey puck, and Casey is looking for excuses to see Beth Markle, the sensitive twin, outside of school, so when she asks him to accompany her to inspect an antique phonograph player that is refusing to play records, he is delighted--and soon the children are investigating the fate of the woman who once owned the phonograph, and who appears to want to hear her favorite song.

The fifth graders of Liberty Falls Elementary have a reputation for trouble, but they still have a field trip to the mansion of Edward Minks (local inventor, founder of the town, and great-great-great grandfather of fifth-grader Eddie). While there, they search for secret inventions that are rumored to be hidden in the mansion--but they find that they are not the only ones searching, and somehow this class of trouble-makers must work together to thwart...

The Big Bad Wolf looks for a respectable job now that he has three cubs of his own.

Brack, owner of the Abracadabra Hotel, has disappeared at a critical time, and once again Charlie Hitchcock and Tyler Yu team up to solve the mystery--they know he never left the hotel, but the only clues they have is a few words scrawled on a piece of paper and a clump of fake red hair.

When Charlie Hitchcock, the smartest kid at school, gets a note from the school bully, Tyler Yu, demanding a meeting, he fears the worst--but it turns out that Tyler wants him to solve the mystery of the missing magician at the Abracadabra Hotel.

On a trip to the science museum, Maddy learns that bees are fast becoming endangered and is determined to do something about it.

When a horse stable opens near Maddy's house, Maddy sets her sights on horseback riding lessons. But lessons are expensive, so she comes up with a brilliant plan to earn the money to pay for them: Pet Camp! Maddy will host a summer camp for one week. The twist? Each camper gets to bring their pet. Unfortunately, the practical details turn out to be trickier than Maddy imagined. The rabbit gets lost, the dog eats all the snacks, and Maddy's brother...

The Vanderbeeker children, ages six to thirteen, race to help save their mother's baking business from closure after it fails an inspection.