Dink writes to his favorite author, mystery writer Wallis Wallace, and invites him to visit Green Lawn. To Dink's amazement, Wallace says he'll come! But when the big day arrives, Wallace is nowhere to be found.

Third-grader Dink and his detective friends hope to receive a big reward by finding the person whose video recorder picked up a picture of the local bank robber.

Dink, Josh, and Ruth Rose get an urgent call from Mrs. Davis--her canary is missing and he's not the only one--two other pets are missing as well. The kids suspect a petnapper.

Wallis Wallace, has invited Dink, Josh, and Ruth Rose for a sleepover--in a haunted castle! As soon as the young detectives arrive, they start hearing screams behind the walls. Will they discover who--or what--is haunting Moose Manor?

Dink keeps getting envelopes in the mail addressed to D. Duncan. But the letters inside all start with Dear Doris and don't make any sense! Josh and Ruth Rose think someone's playing a trick on Dink.

Dink and his pals Josh and Ruth Rose try to solve the mystery of who is stealing baby falcons from their nests.

When Dink, Josh, and Ruth Rose discover an old ship off the Florida coast loaded with gold, they're not sure if they want to share their findings.

It's almost Halloween, and reports of strange sounds and even stranger sights are coming from Green Lawn's only hotel. It's up to Dink, Josh, and Ruth Rose to figure out what's going on--before Green Lawn turns into a ghost town.

While picnicking on Squaw Island, a group of friends find a $500 bill. But when they return the next day, the whole island has disappeared and they must figure out the mystery to this vanishing act.

Dink's uncle is the curator of a museum with a dazzling new treasure--a statue of a jaguar cradling an emerald between its front paws. Dink, Josh, and Ruth Rose discover that the emerald has been replaced with a fake.

The king and queen of Socotra have been kidnapped! For his protection, the prince is sent to Green Lawn to hide out with Dink's family. Can the three sleuths catch the kidnappers and unravel this royal mystery?

Lucky O'Leary feels lucky when the lottery ticket his grandfather sends him for Christmas turns out to be a million-dollar winner! But before Lucky can cash it in, someone sneaks into his house and steals it.

Dink, Josh, and Ruth Rose are excited about the new Egyptian exhibit. But then the mummy is stolen and the tomb robbed of its treasure can they unravel the mystery and return the mummy to its rightful resting place?

Dink, Josh, and Ruth Rose are spending a week at a dude ranch. Everything is normal in a cowboy kind of way until Josh finds a huge gold nugget! Just as they're deciding what to do, the nugget disappears.

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.

As soon as a new panda and her baby arrive in Green Lawn, the baby is stolen. Can Dink, Josh, and Ruth Rose collar the culprits?

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

Dink, Josh, and Ruth Rose investigate the disappearance of a valuable racehorse that Dink's uncle and his friend, Forest Evans, have just bought and entered in a race at Saratoga.

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

Dink, Josh, and Ruth Rose investigate the theft of a great deal of money from the belly of a nearly life-size Tyrannosaurus Rex model that their friend, Jud Wheat, is using to raise money for a dinosaur museum.

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, Josh, and Ruth Rose investigate a mysterious man in black, whom Josh believes is a vampire.

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 are stolen, and by whom.

Ruth Rose, Josh, and Dink attend a concert during which someone steals the star's diamond pendant, and they are soon on the trail of the thief.

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

Reports of zombies and grave-robbers alarm the people of a Louisiana swampland village. But Ruth Rose, Josh, and Dink begin to suspect that the supernatural may not be the cause of the eerie occurrences.