"Extreme Weight Loss" 8 p.m. ABC (third season debut) — ABC's answer to "The Biggest Loser" returns.

"Deadliest Catch" 9 p.m. Discovery — Jake leaves the Northwestern.

"The Voice" 9 p.m. NBC — The top 8 become the top 6.

"Family S.O.S. With Jo Frost" 9 p.m. TLC (new series) — The "Supernanny" is back to fix family issues.

"American Restoration" 10 p.m. History — Billy Joel offers a rare BSA 850 motorcycle with ties to his storied motorcycle past.

"Body of Proof" 10 p.m. ABC (series finale) — Megan's father's exhumation uncovers doubts whether he committed suicide.

"Brooklyn DA" 10 p.m. CBS (new series) — A six-part documentary focusing on the Kings County District Attorney's Office.