When their favorite pizza restaurant almost goes out of business, the Alden children try to help their friends stay open while they find out who is behind all their problems.
When seemingly unrelated and strange events start to happen and a precious Vermeer painting disappears, eleven-year-olds Petra and Calder combine their talents to solve an international art scandal.
When Allie is contacted by the ghost of a dog, she and Dub investigate the surly new boy at school and his father, who may be running a puppy mill, to see if they are involved.
Detective Doggedly, a pair of cows, and a sheep who looks very familiar are all nearby each time three pigs get in trouble, but the big bad wolf is conspicuously absent.
Penny Farrell, captain and third baseman of the Hawks softball team, tries to uncover the reason for the strange behavior of two teammates who have also suddenly turned into super athletes.
Unjustly dismissed from the football team for drug possession, Scott learns that the only way to clear himself with his parents is to find out who planted the marijuana in his duffel bag.
A young orphan, afraid of being sent to the workhouse, finds himself at the mercy of the unsavory owner of a tavern in Alexandria, Virginia, while he tries to solve the mystery surrounding his past and a missing twin.
