While attending an amusement park under the new ownership of their friend Daisy, Joe and Frank investigate the disappearance of a patron who was last seen riding a hit attraction, an event that has threatened Daisy's family's livelihood.

Ages 8-12.|||690L Lexile|||juvenile

Franklin W. Dixon.

Publisher, dates, and paging may vary.

Accelerated Reader AR MG 4.8 4 159041.