When sabotage strikes, high school choir coach Paige Marshall fights to save her singers from suspicion in the third Glee Club mystery from the New York Times bestselling author of the Testing trilogy.

They have the talent. They have the heart. Nothing can stop Prospect Glen's choir from taking home the trophy in the Show Choir National Competition. But below the soaring voices, there are murmurs of suspicion. So-called accidents keep befalling the other choirs. Yet Prospect Glen remains untouched.

With their competitors clamoring for them to be disqualified, the group may soon be singing a different tune. If there's anyone who can restore harmony to the competition, it's Paige. But this time she'll needs to stick her neck out to discover who's behind the sabotage, or she may end up singing her own swan song.