Hardy Boys Adventures Collection Volume 9: The Gray Hunter's Revenge, The Disappearance

The Gray Hunter's Revenge:

Frank and Joe investigate a supernatural crime in the 17th book in the thrilling Hardy Boys Adventures series.

One of the Hardys’ favorite writers, Nathan Foxwood, has recently died in a tragic car accident. Now, the press is swarming his house in Bayport to get the scoop on the novel he completed just before his untimely death.

When Joe hears that Nathan’s wife is having a giant estate sale, he drags Frank with him. Who could pass up the opportunity to see inside their favorite author’s home? Nathan’s wife says she wants to get away as quickly as possible; strange things have been happening since their first night there, and now her husband is gone, and she’s sure the house is haunted. But Nathan’s assistant, Adam, is not so willing to blame it all on the supernatural. Valuable things keep disappearing from the house - why would a ghost need money? Adam recognizes the Hardys’ from an article he read and asks for their help.

Of course, Frank and Joe Hardy don’t believe in ghosts and are positive they can get to the bottom of all this. But when Adam is mysteriously hurt after spending the night alone in the house, the brothers start to wonder; what is the motive for these crimes if not ghostly revenge? Could these brother detectives be in over their heads?

The Disappearance:

It’s a case of hidden identities for brother detectives Frank and Joe in the in the 19th book in the thrilling Hardy Boys Adventures series.

The Hardy brothers and Frank’s new girlfriend, Jones, are attending a local comic book convention on the shore. They meet up with Jones’s friend Harper, a fellow comics super fan, on the boardwalk outside the convention. The four of them spend hours running from booth to booth and end the perfect day with pizza at Harper’s short-term rental apartment.

Things don’t stay so perfect, though. On the way home, Jones realizes she switched phones with Harper by accident and she is getting some really scary texts. When they show up at the apartment the next day, they find it totally destroyed, and Harper is missing.

Frank and Joe start digging into their new friend’s life, hoping to find out where she might have gone, but the more they find out about her, the more mysterious she becomes. Can Frank and Joe find this secretive character? Or has she disappeared forever?

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Lydbog: 17. februar 2026