A series of bizarre events in their home town lead the Hardy boys on a trail of robbers and kidnappers.

When Mr. Hardy disappears while investigating a mystery surrounding a vacant house rumored to be either haunted or an abode for criminals, the Hardy boys search for the truth.

Timber wolves, a Rocky Mountain blizzard, and a mine cave-in are only a few of the perils Frank and Joe Hardy encounter during their search for the principal members of a notorious gang responsible for a payroll robbery. Clue by clue, Frank and Joe cleverly fit into place the scattered pieces of this dangerous puzzle and come up with the astonishing solution.

A not-so-sweet sixteen...
Rich girl Lindsay Peyton is throwing the biggest and best Sweet Sixteen bash that Bayport has ever seen. is throwing the biggest and best Sweet Sixteen bash that Bayport has ever seen. But when Frank and Joe discover that her car has been keyed, it looks like someone isn't so happy that Bayport's princess is showing off.
Meanwhile, a group calling themselves the Scaredevils is filming themselves committing...

"Frank and Joe are back on Black Bear Mountain, the scene of a previous wilderness adventure and mind-bending mystery. This time, the brothers are checking in on Dr. K, a friend they made during their first trip. Dr. K is a fan of living off the grid, but he's been MIA long enough to cause worry in the small mountain town. And so the teenage detectives Black Bear Mountain relied on before have been called in to help once again. It's not a good start...

There are no streetlights on Farragut Alley, so keeping Gabe in our sights was a little difficult. We followed him down toward the dead end, and then suddenly a door opened to our right, in one of the nondescript retail buildings. I wasn't aware of apartments being inside, but maybe above the stores...
"JOE!" Frank suddenly yelled behind me, but it was too late. A dark shape advanced on us from inside the doorway, and a bag was thrown over my...

A criminal that seems to be straight out of a Sherlock Holmes novel is out to get brother detectives Frank and Joe in the sixteenth book in the thrilling Hardy Boys Adventures series.
An original Sherlock Holmes manuscript was stolen from the Bayport Museum and now pages keep showing up in Frank and Joe's things: their lockers, menus, even the backseat of their car. It's clear someone is out to frame them. But who could it be?
The boys...

It's a case of hidden identities for brother detectives Frank and Joe in the in the eighteenth 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...