While hosting a popular radio show, psychologist Lisa Crandall Graham is the recipient of an anonymous phone message, filled with psychotic rage, and delivered right on the air only weeks after her husbands tragic death. Determined to put her devoted callers first, Lisa refuses to give in to the horror of her own loss or the personal danger the message suggests. With a new autocratic manager, Ross Avery, at the San Francisco radio station tension is already high among radio personalities and employees. A series of terrifying events involving colleagues and friends causes even Lisas courage to falter. With surprising sensitivity Ross Avery steps in to guide Lisa to deal with the effects of her own emotional battles, the danger that plagues them all and the need to follow her heart.