Their search for a friend's stolen jalopy leads the Hardy boys to the discovery of the man who stole a fortune from the Applegate mansion. They are thus able to clear the father of another of their friends.

Five years after a failed heist in Kuala Lumpur, Malaysia, the man known only as "Jack Delton" is called out of anonymity by his former boss, Marcus Hayes, to clean up after the robbery of an armored car from an Atlantic City casino goes spectacularly wrong. Jack has 48 hours to find the surviving henchman and the over one million dollars before an ink bomb hidden in the cash goes off, as well as deal with FBI agent Rebecca Blacker and the local kingpin....

Twelve-year-old Robyn Loxley has seventy-two hours to decide between sacrificing herself to save her parents and friends, or continuing to lead the rebellion to rid Nott City from Ignomus Crown once and for all.

Ronia, who lives with her father and his band of robbers in a castle in the woods, causes trouble when she befriends the son of a rival robber chieftain.

Trying to help Mr. Farmer with his finances, Minnie and Moo go to the bank to ask for money and are mistaken for the Bazooka sisters, dangerous outlaws.

When someone steals the money the town has been collecting to help the ducks, Josh and his friends try to find the thief.

When Nott City is taken over by a harsh governor, Ignomus Crown, and her parents disappear, twelve-year-old Robyn Loxley flees for her life and joins a group of children trying to take back what is rightfully theirs.

When fifteen-year-old Ty, who has always lived on the ocean floor, joins Topside girl Gemma in the frontier's underworld to seek and stop outlaws who threaten his home, they learn that the government may pose an even greater threat.

When their father is kidnapped while investigating a case of sabotage, the Hardy boys must come to his rescue.

The Hardy brothers interrupt their investigations of jewelry-store holdups to answer a plea from their cousin on a New Mexico cattle ranch.