<Tr> <Td_colspan="2"> List of House episodes </Td> </Tr> <P> "No Reason" is the twenty - fourth episode and the season finale of the second season of House . It premiered on Fox on May 23, 2006 . The episode features creator David Shore's directorial debut . </P> <P> As House and his team work on the diagnosis of Vincent, a man with a giant swollen tongue and a high temperature, a disgruntled former patient named Jack Moriarty walks into House's office and shoots House twice with a handgun . Vincent develops two additional symptoms: blood leaking into his left eye, causing it to swell outward (and eventually be removed), and a burst testicle . The symptoms appear to have no possible connection to each other . </P> <P> Waking up from a coma two days later, House continues to treat Vincent from his hospital bed in the ICU with Moriarty, shot by hospital security and handcuffed to his bed, as his roommate . House wakes up Moriarty and asks why he wanted him to die . Moriarty replies that it was not his intention to kill House, and that he wanted to see House suffer . The reason Moriarty wanted to see House suffer was because his wife was a recent patient that House previously treated . While diagnosing her, House badgered Moriarty until he admitted that he had cheated on her . Despite this fact having no medical relevance to his wife's illness, House told her about the affair anyway . Moriarty's wife then committed suicide shortly after being released from the hospital . He tells House that he realizes that his affair led to his wife's suicide, however he feels that House should take part of the blame because there was "no reason" to tell her about it . </P>

Who shot house at the end of season 2