Final Ceremony at the River Heights Celebration

It's time for the final ceremony of the River Heights Celebration, where four candidates are going for the Mahoney Scholarship. All four are equally qualified—and equally worthy suspects behind the strange occurrences that have been happening at the carnival.

Arson, theft, and threatening notes all combine to provide a stunning conclusion to the Sabotage Mystery Trilogy. Can Nancy finally figure out the saboteur—before it's too late?