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

KC discovers that the President of the United States has been replaced by a clone and sets out with her friend Marshall, on a dangerous mission to set things right.

When the umpire at the baseball game fundraiser is accused of stealing a collection of autographed baseballs, Dink, Josh, and Ruth Rose try to prove his innocence.

Dink and his friends meet an exchange student, Sammi, who is actually the prince of an island country, hiding from those enemies who have kidnapped his parents and who may be after him as well.

KC's mother and the clone of the President of the United States are kidnapped by disgruntled astronauts who want to take over the International Space Station.

When doctored photographs of the President of the United States appear after an innocent Halloween party, his stepdaughter KC and her friend Marshall have to find the culprit in order to save the President's chances for re-election.

"As Thanksgiving approaches, Nate and Lucy must help Bradley and Brian find out what their shady new neighbors are up to"--

While investigating a mystery on New Year's Eve, four friends encounter a big surprise.

KC and Marshall take a tour of the Bureau of Engraving and Printing, and when they discover that someone has been stealing bricks of newly printed money, they resolve to find the thief.

"Dink, Josh, and Ruth Rose solve a Valentine's Day mystery"--