When the Sweet Sixteen party plans of a local rich girl are overshadowed by pranksters who key her expensive car and post a video of the act on the Internet, Frank and Joe resolve to identify the culprits.

When the daughter of an amusement-park owner goes missing, it's anything but fun and games in this Hardy Boys adventure-a new take on the classic series. Daisy Rodriguez is missing. Just like that, gone without a trace. Her father, Hector Rodriguez-owner of Funspot, Bayport's local amusement park-is frantic. He feels he's to blame, since Funspot was recently the location of another disappearance. Could Daisy's vanishing be somehow connected? Joe...

While participating in a Revolutionary War reenactment, Frank and Joe learn that there has been a real casualty and set out to investigate the incident.

When a sinkhole swallows up a historic statue, Frank and Joe, suspecting foul play, stumble into an abandoned underground city where a cultish band of criminals is plotting to take over Bayport.

While at a comic book convention, the Hardy brothers and Frank's new girlfriend Jones meet up with Jones's online friend Harper, but when she disappears overnight, the brothers start looking into her life and uncovering her secrets.

Brother detectives Frank and Joe return to dangerous Black Bear Mountain to help locate a scientist gone missing from a remote research station.