A costume worn by famous rock star Bobby Hatrack is stolen, and Shelby Woo is on the case. But who would want to steal a bunch of sequins? Shelby and her friends, Cindi and Noah, look for clues. . . and suspects! Maddy Baker, "The Number One Fan," is obsessed with everything Bobby, including the restraining order she got for bothering him too much—and has framed on her wall. Did she want to add to her collection? Bobby Hatrack impersonator Robby H even got plastic surgery to look like the famous performer; a real Bobby costume would complete the job. A bitter argument about money ended the partnership of Bobby and Jim Lock, who might want the costume for revenge. The stage is set for a show-stopping crime. Can Shelby solve the case before the music fades. . . and the thief makes his escape?