Violinist Dierdre Thompson is vying for top honors in Seattle’s most prestigious musical competition, but Nancy finds that something about the contest strikes the wrong chord. The concert hall is the focus of a criminal conspiracy, and Dierdre, who is blind, is the first to sense trouble — and the first to face danger!
Nancy vows to discover who wants Dierdre out of the contest and out of the picture. Her investigation leads her on a chilling chase through the maze of tunnels beneath the city and on a nonstop ride to terror on the monorail above. The prize is a priceless Stradivarius violin, and the competition is fierce!