In the sixteenth—and perhaps the most crucial—story in this exhilarating series, Sammy Keyes is about to uncover the most personal mystery of her life: who is her Dad? In the wild ride to and around Las Vegas, Sammy tracks down her Diva mom who is secretly planning to marry her boyfriend's father, who is also the father of Sammy's nemesis Heather. Throw in a few Elvis impersonators, and this is an adventure that will have listeners "all shook up"!