Henry's parents decide that it's best for him to go to a high school after traveling the world. In his new school, he meets new friends and uncovers a huge secret.

Henry stumbles upon a secret in the Dillinger car.

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

Henry tries to clear his uncle's name by solving the murder of the former partner of Jasper's father and finding a Viking artifact that he was looking for.

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