Extreme Weight Loss (7 p.m., ABC/Ch. 4): A 347-pound woman wants to lose weight before she looks for the son she gave up for adoption.
Food Fighters (7 p.m., NBC/Ch. 5): An unemployed home chef faces off against five professionals.
Matador (7, 8 and 10 p.m., El Rey): A reporter investigates Tony.
Rizzoli & Isles (7 and 9 p.m. TNT): A rare-book seller is murdered.
America's Got Talent (8 p.m., NBC/Ch. 5): A dozen of the 48 finalists perform.
Sullivan & Son (8 p.m., TBS): There's an open-mic night at the bar.
Perception (8 and 10 p.m., TNT): Pierce witnesses the death of a gallery owner.
Celebrity Wife Swap (9 p.m., ABC/Ch. 4): The wives of Plaxico Burress and DJ Paul trade places.
Frontline (9 p.m., PBS/Ch. 7): A look at the U.S. role in Iraq, from 2003 until now.
Pretty Little Liars (9 and 11 p.m., ABC Family): Hanna starts drinking more heavily.
Chasing Life (10 p.m., ABC Family): April plays hooky from work to hang out with Beth.
Royal Pains (10 p.m., USA): Divya bonds with a woman struggling to get pregnant while Hank pursues a romance with a woman he met in Europe.
Tyrant (11 p.m., FX): Barry convinces Jamal to meet with an exiled opposition leader.
Finding Carter (11 p.m., MTV): A party gets out of control.
Covert Affairs (11 p.m., USA): While under cover in Paris, Annie accepts an invitation to the Russian embassy.