2013 Canadian science fiction thriller television series

该影片基于Marilyn Bell（Caroline Dhavernas饰演）的真实故事改编。Marilyn Bell当时16岁，是一名游泳健将，她正尝试成为第一个游泳横渡安大略湖的人。但当时美国还有位顶级游泳选手Florence Chadwick，与她一同在这场特殊的游泳马拉松中竞争第一。因为Florence Chadwick身经百战，所以大部分人都认为她会获取最终的胜利。但出乎意料的是，由于Florence Chadwick对途中艰险程度的轻视，导致了她退出了比赛，而Marilyn Bell坚持到了最后，最终成为了横渡安大略湖第一人。

Brigitte has escaped the confines of Bailey Downs but she's not alone. Another werewolf is tailing her closely and her sister's specter haunts her. An overdose of Monkshood - the poison that is keeping her transformation at bay - leads to her being incarcerated in a rehabilitation clinic for drug addicts where her only friend is an eccentric young girl by the name of Ghost.

The story of two outcast sisters, Ginger and Brigitte, in the mindless suburban town of Bailey Downs. On the night of Ginger's first period, she is savagely attacked by a wild creature. Ginger's wounds miraculously heal but something is not quite right. Now Brigitte must save her sister and save herself.

本片是导演文森佐·纳塔利拍摄《立方体》的雏形，利用惊险的体验，挖掘人性的恶。
三人因为未知怪兽的来袭被困在升降电梯里，猜忌、冲动导致他们的互相残杀。最后，大批人群因为未知恐惧奔向已成为炼狱场的电梯，画面结束在女主角疯癫诡异的眼神中。
影片中没有出现任何神魔鬼怪或者灵异现象，传说中的怪兽也未出现，观众所能目睹的血案全由人类自己造成。相对于其他装神弄鬼的恐怖片，这部20分钟的短片将恐惧的来源模糊化，转而用人性的不可捉摸和密闭空间促进剧情发展，再加上血浆满地的cult场景，给人带了一场小小的刺激。
除了《紧急迫升》、《立方体》，文森佐后来拍摄的《人兽杂交》，都是通过挖掘人性的弱点和一些偶然性因素，来营造恐怖气氛或者制造话题。