A small town in New Mexico surrounded by desert which, time and again as the day breaks, disgorges an increasing number of Mexicans who have either been murdered or have died of thirst. A convict is released from prison. Thanks to his new-found Muslim faith, William Garnett’s behaviour has been exemplary and, with the aid of a sympathetic parole officer, he begins a new life in...。Lisa和Kate两姐妹在墨西哥海岸度假,她们在海底观鲨铁笼中潜水观赏鲨鱼时,牵连铁笼的绳子突然断裂,观鲨笼掉落到47米深的海底。由于所存氧气不多,她们只有一个小时的时间逃脱牢笼回到水面。而此时,大白鲨也在她们周围游弋着。47米深的海底一片漆黑,只能通过手电筒观察铁笼外面的情况。水面上工作人员的声音时有时无,救援队也迟迟不见踪影,姐妹俩都非常害怕。面对仅剩的氧气,她们必须马上做出选择才有一线生机。为了避开鲨鱼活着游出水面,姐妹两人与鲨鱼之间展开了一场斗智斗勇扣人心弦的生死较量。。一名夏令营辅导员发现自己被凶手围追堵截,他向他的恐怖电影爱好者朋友寻求建议,发誓要找出真凶,真凶不是别人,正是……。