在这部大冲击惊悚/悬疑片中,故事讲述私家侦探哈柏应聘至纽奥尔良一大地主家庭调查一封告密信，由于牵涉入大地主与石油大王之间的斗争中，几乎因而丧命。该片拍来有点造作，但节奏仍算流畅爽朗，其中哈柏与石油大王之妻被关在水室而几乎没顶的高潮戏拍得相当紧凑刺激。
Harper is brought to Louisiana bayou country to help out an old girlfriend who is worried that her husband will find out that she is cheating on him. What is more, he finds himself caught in a power struggle between the matriarch of the family and a greedy oil baron, who wants her property. Poor Harper! Things are not as straight-forward as they initially appeared.
