Two turtles find a hat that looks good on both of them, but, with fairness in mind, they decide to leave it be, until night falls and one of the turtles changes its mind.

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

In solving the mystery of two medallions missing from an inherited curio collection, the Hardys wind up in a desolate area of Guatemala at the mercy of dangerous thugs.

"Nate the Great and his trusty dog Sludge, have a tricky case to solve. Nate's friend Rosamond has started a future-telling business, but her money box is missing. Sludge and Nate visit Claude, who helped Rosamond set up her business, and Finley, who collects boxes for his rat. They can't seem to help. It looks like the only way to clean up this case is to get down and dirty in the dumps!

When his toothbrush goes missing, Dog's friends help him look for it.

Clifford and Emily Elizabeth set out to retrace the big red dog's week in an attempt to find his lost toy mouse.

When they are separated for the first time since birth, Iris and Lark struggle with insecurities over their individual identities at the same time things begin to go missing around town.

"A tiny fish proudly wears a blue hat. It fits him perfectly. Problem is, trouble could be following close behind... So it's a good thing that the enormous fish he took it from won't wake up. And even if he does, it's not as though he'll ever know what happened, right?"--

While trying his best to help a penguin that has shown up at his door, a boy journeys all the way to the South Pole, only to realize that the penguin was never lost.

"Now with a brand-new look, this is an edition that collectors won't want to miss! In The Mystery of Cabin Island, the eighth book in the incredibly popular, long-running series, Frank and Joe Hardy encounter several dangerous setbacks as they search for Johnny Jefferson and some antique stolen medals. A special treat for Hardy Boys fans and any reader who's new to the series!"--