The Phantom of the Fortress (The Thunder and Lightning Series)

A psychologically disturbed Austrian, who believes he is the reincarnation of Mozart, will hold all of Salzburg, Austria under his spell unless Gabe, Alex, Thunder, and Lightning can unravel the clues, solve the mystery, and capture the master of deception. Along the way, ticks and traps become more complex as townspeople pay the price for each error made by the boys. Thunder and Lightning, along with a team of the boy's friends, work to save the town, but a surprise twist puts the fate of Salzburg on the shoulders of Gabe. Will he crumple under the weight? Will he overcome the madman's manace?