在这部神秘电话惊悚/恐怖片中,此片是1979年《惊呼狂叫》（When A Stranger Calls）的续集，在第一集中，吉儿（卡洛·凯恩）一日在当保姆时，不断接到奇怪的电话，电话的另一端总是传来诡异的一句话：“你去察看过孩子了吗？”吉儿向警方求救，警方告诉她一个毛骨悚然的消息：这些神秘电话都是从她的屋子中打出来的！当她去察看孩子们时，他们竟然全都被谋杀了……
此续集则发生在五年后，吉儿在一所大学中担任心理辅导员之职，当年发生的惨事，仍深印在她心中。某日，大学生茱莉亚（Jill Schoelen）在当保姆时，发觉有人藏匿在她家中，她向警方求助却徒劳无功，於是她转向大学辅导老师吉儿求救，迫使吉儿又陷入当年恐怖的经历中。
Julia is babysitting two young kids while a doctor and his wife are out. During the evening, a stranger knocks on the door asking Julia if she can call the auto club so he can get a tow. The phone line is dead though. This is all part of the act as he has made his way inside and abducted the two children. Years later, Julia has become an introvertive college student. She claims the stalker is back haunting her. Enter Jill Johnson and now retired cop John Clifford, who have reunited to help Julia find the stalker. Can they stop him before he strikes again?
