A little girl finds a stuffed dog in the park and decides to take it home.

Penny feels guilty after taking a beautiful blue marble that she sees in Mrs. Goodwin's grass, but gets a pleasant surprise when she goes to return it the next day.

When their most valuable loot, a big hunk of cheese, is stolen, Riff Raff and his rodent pirate gang embark on a quest to reclaim their lost treasure.

Eleven-year-old Millie and five other girls, snowed in at Amelia Earhart Birthplace Museum in Atchison, Kansas, are on a scavenger hunt when the lights go out and Amelia's aviator goggles go missing.

Cow friends Minnie and Moo search for a jelly donut thief who may have left behind a blue feather.

When a weird blue chicken comes to Chicken Squad headquarters for help, siblings Dirt, Sugar, and Sweetie help find her missing house.

"A mermaid and her otter friend go on a journey to help a lost beluga whale return to the Arctic."--

During a rough year in which she was placed in the care of her prickly grandfather after her father suffered a stroke, Rosie embarks on a search for her missing dog after he is given away by her estranged mother.

When Harry, the class pet, gets out while at Amelia Bedelia's school break, Amelia and her friends must find him.

"Third-grader Aven Green has been solving mysteries for a whole month, cracking such cases as The Mystery of the Cranky Mom. But can this perceptive detective solve two cases at the same time? First her teacher's lunch bag disappears. Then Aven's great-grandma's dog goes missing. Fortunately, since Aven was born without arms, all the "arm" cells went to her super-powered brain instead. (That's her theory.)"--