Frank and Joe must take the shine off a jewel thief who sends ominous riddles in this Hardy Boys adventure. First a priceless painting disappears from the museum; then two ancient samurai swords vanish from a private collection. A string of robberies has hit Bayport, and all signs point to the Phantom, a recently released ex-con who last struck more than twenty years ago. There's only one problem: the Phantom has vanished into thin air, and not even...

Burglaries and suspicious accidents plague a motorcycle exhibition.

Tina wants to make friends with the new girl next door, but she gets off to a bad start. Then, when things start to disappear, Tina gets the blame. With the clues, the reader can find the real thief. Includes quiz.

Mary-Kate and Ashley enter their basset hound, Clue, in the dog show and expect that he will win until someone steals him.