催眠医师麦克(葛伦威兹提克)拥有异于常人的天赋，他能感应病人内心浮现的印象。为了帮助警探侦破案件，他感应到一名年轻女孩即将被河水淹没，被警方视为重大破案线索，缉捕对象是一名宗教狂热连续杀人犯，声称找到了长生不老的秘密。年轻女孩虽然及时逃离虎口却被吓得失魂落魄，现在只有麦克能与这名证人作心电感应，及时找到凶嫌藏身之处。While treating a policewoman for smoking, hypnotherapist Michael Strother has a telepathic vision of a young girl floating beneath the surface of a stream. The escaped victim of a ritualistic serial killer, the girl has become mute, and Michael is called upon by Scotland Yard to unlock the secrets she holds in order to catch a man who believes he has discovered the key to immortality.