When they go on a field trip to a pop-up museum sponsored by the National Baseball Hall of Fame, eight-year-old twins Zach and Zoe discover an empty display case and with the help of their friends, they figure out what happened.

When Lucy slows down, she finds that she does not lose things as much as she used to.

Froggy and his father search the house for the mislaid items they will need on their bike trip.

Junie B. Jones experiences glee while showing off her new furry mittens in kindergarten, but disaster strikes when they disappear from the playground.

When Harry the stuffed elephant cannot find his fluffy old blanket at nap time, his friends try to help him remember where he left it.

When a puppy who is being trained as a police dog goes missing, third-grader Judy forms a detective agency to solve the mystery, imitating her literary heroine, Nancy Drew.

Detective brothers Frank and Joe search for a very special beetle.

"Sam can't find his swimming goggles! He looks everywhere, asking his mom, dad, brother and sister if they have seen them. They all say the same thing, "they are always in the last place you look." Follow along as Sam searches and help him find his swimming goggles."--Amazon.

When her best toy mysteriously disappears, Olivia the feisty pig is determined to find out who is responsible.

Young Detective Jeffrey Bones begins gathering clues when Mr. Green asks for his help finding the school bus he lost while shopping at the mall.