Hardy Boys secret files

Brothers Frank and Joe Hardy and their elementary school friends help them track down what they hope is a treasure after they find a mysterious map.

"When the popular comics character Morpho the Morph Monster comes to Bayport for a fan event, everyone is excited, including Frank and his brother, Joe! Morpho is also bringing his very important Morph Spork--a special tool that helps him eat people's brains. But right before the event is about to start, Morpho's Spork goes missing!"--P. [4] of cover.

Feeling skeptical about a new kid's boasts about his magical talents, Frank and Joe Hardy wonder about a neighbor's prized show dog's recurring disappearances and reappearances, which seem to support the bragging newcomer's claims.

Frank and Joe are excited to learn that Thrill Kingdom, their local amusement park, is having a contest for kids to design a brand-new ride. And they're even more excited that their friend Phil is entering. But on the day of the contest, someone ruins Phil's roller coaster contest entry. Since it had been kept in a locked room while awaiting final judging it's up to Frank and Joe to figure out the twists and turns of this coaster caper!