PA: Parental discretion is advised.

DR. HOUSE'S APPROACH IS QUESTIONED WHEN HE TREATS A NUN FOR WHAT HE BELIEVES TO BE AN ALLERGY, NOT REALIZING THE NUN'S PAST IS COMING BACK TO HAUNT HER ON "HOUSE" TUESDAY, JUNE 21, ON FOX

When a nun comes into the clinic with swollen arms, a rash and bleeding in her palms, Dr. House's diagnosis is a bad allergy, not stigmata. However, when he gives her a shot of medication, she has a heart attack, and whether he gave her the correct amount of medicine comes into question. As the nun's case unfolds, the team has to deal with questions regarding their own calling, faith and whether or not they can trust the direction in which their mentor is leading them in the "Damned If You Do" episode of HOUSE Tuesday, June 21 (9:00-10:00 PM ET/PT) on FOX. (HOU-106) (TV-14 L, S)

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: Elizabeth Mitchell as Sister Mary Augustine; Lucinda Jenney as Sister Mary Eucharist; Lori Rom as Sister Mary Pius; Ann Dowd as Mother Superior; Dakin Matthews as Marvin; Taji Coleman as Tech; James Symington as Priest.