It’s October 1938, and radio is king. Vivian Witchell is determined to be a star, and with her new role in the popular detective serial The Darkness Knows, everything she’s dreamed of is finally within her grasp. Until the night she steps into the employee lounge and stumbles upon the body of the station’s most renowned—and most reviled—actress. Clutched in the dead woman’s hand is a threatening letter indicating that Vivian could be the next victim. Suddenly, Vivian’s biggest worry isn’t remembering her lines—it’s staying alive.