The Case of the Disappearing Deejay — Carolyn Keene

DANGER ON THE DIAL!
The hottest rock station in town has just gotten a little hotter -- and somebody's going to get burned. Nancy, Bess, and George are listening to Dan "the Wild Man" Wildman's show when there is a loud crash on the air, a call for help, and then dead silence.

Nancy heads to KRCK to get the lowdown but finds the place is full of fast talkers. Station owner Neal Graham, deejay Rockin' Ray Ludlow, and engineer Tom Cottner are all singing a different tune. Nancy enlists the help of teen deejay Lenny Gribble to rock the rock-and-roll boat and get to the bottom of THE CASE OF THE DISAPPEARING DEEJAY.