They spend the night on the fold-out bed. Danielle wakes up in pain. In the bathroom, she empties a bottle of pills into her hand. There are four. She takes one and leaves two on the sink. Her sister calls from the bedroom in French (subtitled). They argue. We learn that after they were "separated," Dominique was put in a hospital "full of lunatics." The argument wakes Philip, who dresses in the bathroom, where he unwittingly knocks the pills down the drain. Danielle explains to Philip that her twin sister Dominique has come to celebrate their birthday. She asks him to go to the drug store to refill her prescription. He does so, but stops and buys a birthday cake for the sisters, asking to have "Happy Birthday Dominique and Danielle" written on the cake. It takes a long time for the inexperienced baker to do this, and back in the apartment, Danielle, in agony, calls Emil for help. When Philip returns, Emil is watching from his car. Philip brings the cake and a large knife to the woman lying on the sofa bed and is stabbed repeatedly by a crazed Dominique. He drags himself to a window and dies.