In 1939, WBN, a fourth radio network, is about to take to America's airwaves. As if the confusion of the premiere night wasn't enough, Penny Henderson, the owner's secretary, must deal with an unhappy sponsor, an overbearing boss and a soon-to-be ex-husband who desperately wants her back. As the broadcast begins, a mysterious voice breaks the broadcast and suddenly members of the cast turn up dead. It's up to her husband Roger, to find out whodunit as the police chase him through the halls of WBN. 　　译文(2): 1939年，第四个无线电网络 WBN 即将进入美国的广播领域。首映之夜的混乱似乎还不够，老板的秘书彭妮?亨德森(Penny Henderson)必须面对一个不开心的赞助商、一个专横的老板，以及一个迫切希望她回到自己身边的即将离婚的丈夫。广播开始时，一个神秘的声音打断了广播，突然演员阵亡。这取决于她的丈夫罗杰，当警察在 WBN 的大厅里追捕他的时候，找出凶手。