sentences:  He begins to question his own ability to diagnose, while hostility increases between him and Moriarty.As Vincent’s body begins to deteriorate, House struggles through his own self-doubts and must try to make sense of his life and world.House is seen hallucinating sitting in the passenger seat of Moriarty's wife's car next to her as she commits suicide by carbon monoxide poisoning (by starting her car with the garage door closed).