Сюжет
It's time for the final ceremony of the River Heights Celebration, where four candiates are going for the Mahoney Scholarhip. All four are equally qualified—and equally worthy suspects behind the strange occurances 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?