While visiting Wallis's castle, Dink and his friends investigate strange noises that lead them to a dangerous secret
Dink and his friends unearth the mysterious truth behind the envelopes incorrectly delivered to his house
Josh and his two friends look for the person who stole a peregrine falcon from its nest
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
When the guests of the Shangri-La Hotel are scared away by a white-haired female ghost, Dink and his friends investigate the mystery
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 use their detective skills to locate a giant emerald missing from a statue delivered to Uncle Warren's museum in New York City
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 and his two friends help Lucky find the culprit who stole Lucky's winning lottery ticket
Dink, Josh, and Ruth Rose help catch the thieves who have stolen the treasure from the museum's mummy exhibit