chunk: At a restaurant that evening, Lily offers Nina a capsule of ecstasy to help her relax. Initially, Nina turns it down, but later accepts a drink with ecstasy powder in it. Nina returns home late with Lily, fights with her mother, barricades herself in her room, and has sex with Lily until the latter seemingly smothers her with a pillow. The next morning, Nina wakes up alone and late for the dress rehearsal. When she arrives at the studio, she finds Lily dancing the Black Swan. After she confronts her, Lily admits she spent the night with a man she met at the club, and Nina realizes the encounter didn't really happen. Nina's hallucinations become stronger and more graphically sexual and violent.