PA: Due to some graphic content, viewer discretion is advised.

HOUSE IS SHOT BY A FORMER PATIENT AND MUST SHARE A RECOVERY ROOM WITH THE GUNMAN ON THE SEASON FINALE OF "HOUSE" TUESDAY, MAY 23, ON FOX

As House and his team work on the diagnosis of Vince, a man with a giant swollen tongue, disgruntled former patient Jack Moriarty (guest star Elias Koteas) walks into House's office and shoots him. House continues to treat Vince from his hospital bed in the ICU with Moriarty, shot by hospital security and handcuffed to his bed, as his roommate. Mysteriously since the shooting, House feels decreased pain in his leg. However, aftereffects of the shooting begin to affect him negatively and he starts to question his own ability to diagnose, while hostility increases between him and Moriarty. As Vince's body begins to deteriorate, House struggles through his own self-doubts and must trust his team to find a way to solve the case in the "No Reason" episode of HOUSE airing Tuesday, May 23 (9:00-10:00 PM ET/PT). (HOU-224) (TV-14 L)

Cast: Hugh Laurie as Dr. Gregory House; Lisa Edelstein as Dr. Lisa Cuddy; Omar Epps as Dr. Eric Foreman; Robert Sean Leonard as Dr. James Wilson; Jennifer Morrison as Dr. Allison Cameron; Jesse Spencer as Dr. Robert Chase.

Guest Cast: Elias Koteas as Moriarty; Chris Tallman as Vince; Michelle Clunie as Judy; Obie Sims as Cuddy's Patient