Decadencia (Blu-ray release 2015-9-4) is a Spanish erotic drama about a woman who meets a very rich guy.  She is encouraged to explore her sexual fantasy and is brought to sex parties reluctantly.  Even if drugged her performance looks restrained, especially when compared to other women in the background.  This might have been a watchable movie if it does not choose the unnecessary and worst possible ending, leaving an awful aftertaste.  I was not impressed by Fifty Shades of Grey, but that is significantly better than this.