PA: Viewer discretion is advised.

DR. HOUSE AND HIS TEAM TRY TO UNCOVER THE REASON A 10-YEAR-OLD HAS A HEART ATTACK WHILE HOUSE SUSPECTS ONE OF HIS TEAM IS SELLING HIM OUT TO VOGLER ON "HOUSE" TUESDAY, MARCH 29, ON FOX

Chi McBride Guest-Stars

When an obese 10-year-old girl presents with a heart attack, House and his team investigate. At first thinking it's an adverse reaction to diet pills, they ultimately uncover a much more deadly source of her illness. Meanwhile, under pressure from hospital management, House tries to figure out which of his team to fire. But once he makes a decision, Vogler doesn't accept it and demands he pick someone else, leading House to suspect one of his team members is giving inside information to Vogler in the "Heavy" episode of HOUSE Tuesday, March 29 (9:00-10:00 PM ET/PT) on FOX. (HOU-116) (TV-TBA)

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: Chi McBride as Edward Vogler; Jennifer Stone as Jessica Simms; Cynthia Ettinger as Mrs. Simms; Susan Slome as Mrs. Lucile Hernandez; Ramon Franco as Mr. Hernandez; Teddy Lane Jr. as Mr. Conroy; Austin Leisle as Seth; Karen Goberman as Mrs. Ayers; Alyson Morgan as Clementine; Rose Colasanti as Cashier; Alec George as Classmate #1; DJ Evans as Classmate #2; Bryan Fabian as Classmate #3