Henry must find a cure when an ancient virus is released.

Investigating a strange "stone," Henry and his friends discover that the object is actually the rema...

A traveling Samurai exhibit, rumored to be haunted, comes to the museum. When, Henry discovers that ...

Inside a trunk, Henry encounters artifacts, which guide him to a discovery by Ponce de Leon.

Henry stumbles upon a secret in the Dillinger car.

Henry runs into an old friend and rival from the past. Henry believes that this friend's father may ...

When a ruby, which is supposed to be cursed, ends up stolen, Henry and his friends try to find the r...

After a teenage magician makes a Senator's son vanish, using an old magic trick of Houdini, the disa...

When a gang of thieves try to steal a WWII computer, Maggie, Jasper and Henry are cornered in the mu...

Henry tries to clear his uncle's name by solving the murder of the former partner of Jasper's father...

The gang discovers an extinct beetle species.

Henry follows a clue trail left by George Washington as a school election pits Jasper vs. Maggie.