Six Days, Six Nights 

Two beautiful and talented sisters, Alice and Elsa, are caught in a pattern which they have been perfecting since childhood--the art of being cruel to one another. Now that they are all grown up, the stakes are higher. Elsa leaves her husband and, after two years of separation from her sister, arrives unexpectedly on Alice's doorstep. A dark story unfolds about a twisted sibling rivarly in which it is hard to say who is manipulating whom.