dan attacks alex in her apartment and nearly strangles her to death. he stops, but then alex attacks him with a kitchen knife. he overpowers her, but puts the knife down and leaves, with alex leaning on the kitchen counter, smiling. dan approaches the police about having her arrested and they start searching for her. while beth is preparing a bath for herself, alex appears with the knife and explains her resentment of beth, all the while fidgeting and resulting in her cutting her leg, before attacking her. the screaming attracts dan's attention and he wrestles alex into the bath, seemingly drowning her. alex then emerges from the water swinging the knife. beth then shoots her to death. after dan is finished talking to the police, he goes upstairs where beth is waiting for him, they then embrace and proceed upstairs as the camera focuses on a picture of the family.