** spoiler alert ** 
 Well that was one messed up, dysfunctional relationship! Not many likeable characters are there? Nick so obviously hated women and yet turned out to be the 'Good Guy', while Amy was strong and intelligent but a complete psychopath!! But that was the point wasn't it? 
 I was a little disappointed with the ending (although I can see the beauty of letting Amy win) only because I have such a innate sense of justice, and can't stand someone not getting what they deserve. I would have liked to see Amy exposed - but then I suppose, she wouldn't be Amy ;) 
 Thrillingly addictive