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

It's Valentine's day in Green Lawn! But Dink, Josh, and Ruth Rose just aren't feeling the love this year. Valentine's Day was so much more fun when they were little. Then they each start getting messages and clues from a secret admirer! Can the kids figure out who wants to be their valentine?

Bradley, Brian, Nate, and Lucy follow clues on an Easter treasure hunt, while trying to figure out who set it up for them.

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

When Dink, Josh, and Ruth Rose visit Washington, D.C., just before Christmas, they are inadvertently caught up in a kidnapping plot that was intended for the president's dog, but also involves the president's stepdaughter and her friend Marshall.

When the guests of the Shangri-La Hotel are scared away by a white-haired female ghost, Dink and his friends investigate the mystery.

"Dink, Josh, and Ruth Rose must solve a mystery when they go whale watching in Alaska"--

When Dink, Josh, and Ruth Rose visit Plymouth, Massachusetts for Thanksgiving, they uncover a mystery that dates back to the landing of the Pilgrims.

Dink, Josh, and Ruth Rose are enjoying a visit to San Francisco when Holden, their college-age tour guide, is accused of abducting Miss Chinatown from the Chinese New Year parade and stealing her valuable crown.

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.