Three nights. Three riddles. Three robberies.
First, a priceless paintingdisappears from theBayport Historical Museum; then, two ancient samurai swords vanish from aprivate collection. A string of robberies has hit Bayport, and all signs point to thePhantom, a recently released ex-con who last struck more than twenty yearsago. There s only one problem: The Phantom has vanished into thin air, andnot even Frank and Joe Hardy can track him down.
Then the boys begin receiving threatening notes in the mail, each onecontaining a strange riddle. And it looks like the Phantom s next target could be the valuable Emeraldof Astara, the 2,500-year-old crownjewel of the historical museum. Can the Hardys crack thePhantom s code before he strikes again?”