A to Z mysteries. Main series

Dink Duncan and his two friends investigate the apparent kidnapping of famous mystery author Wallis Wallace.

Dink and his friends investigate why pets, like Mrs. Davis's canary, Mozart, are mysteriously disappearing all over town.

Dink and his friends unearth the mysterious truth behind the envelopes incorrectly delivered to his house.

When Ruth Rose and her friends, vacationing in Florida, discover that her grandmother is about to invest in a project to recover sunken treasure, they stumble upon evidence that the entire plan may be a fraud.

While picnicking on Squaw Island, Dink, Josh, and Ruth Rose find a hundred dollar bill, and when they return to explore further they find an entire cave full of money.

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.

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

While visiting Dink's uncle in New York City, Dink, Josh, and Ruth Rose help uncover who is responsible for stealing a very valuable painting.

When someone steals the money the town has been collecting to help the ducks, Josh and his friends try to find the thief.

At Green Lawn Elementary, the entire school becomes involved in a mystery when Mr. Bones, the skeleton in the nurse's office, disappears.

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.

While visiting their friend Wallis and her adopted daughter on Mount Desert Island, Maine, Josh, Dink, and Ruth Rose investigate why three white wolf cubs were stolen, and by whom. W is for Wolf. ... Dink, Josh, and Ruth Rose are thrilled to visit Wallis Wallace at her new cabin in the Maine wilderness. On their very first day, they glimpse a white wolf and her babies on a cliff. But soon after the kids spy the wolf family, the pups are wolf-napped!...

Dink, Josh, and Ruth Rose help catch the thieves who have stolen gold from Sammi's parents, the king and queen of Costra.