After Janet's body is found hanging in an elevator shaft, Dr. Poirret sedates a panicked Gertrude. When Gertrude awakens, she confronts Peter, a middle-aged patient on crutches, who claims to have knowledge of who is committing the killings. Gertrude believes him, assuming she is being framed, but he will not reveal any further details to her. In response, she steals his crutches from him. After Peter's body is found in the boiler room, Gertrude is escorted out of the hospital and met by the Mother Superior, who scolds her for her behavior and has her sent to an isolation cell to be sedated. Meanwhile, Sister Mathieu confesses to Dr. Roland to stealing drugs for Gertrude, and threatens suicide if she is exposed. She then begins to seduce him.