Lost

Lost
9/8c, ABC
Juliet certainly took one for the team last May and is definitely dead, but she's slated to return (in one way or another) this season. Claire and Boone are back, too. Tonight, in fact. But in the flesh or as ghosts? And last we saw Locke, he was alive in Jacob's bunker inside the Taweret statue and dead in that crate on the beach. What gives?  All we really know about the final-season opener is what the producers have told us: "The aftermath from Juliet's detonation of the hydrogen bomb is revealed." — Paul Droesch

The Good Wife
10/9c, CBS
At long last, Peter's appeal trial begins, but he's made an offer from his nemesis Glenn Childs that could guarantee his freedom. Of course, it comes with strings attached. As for Alicia, she has a dilemma of her own: She must defend in civil court a wealthy, arrogant client (Dylan Baker) she suspects murdered his wife. Mamie Gummer (Meryl Streep's daughter) guest stars as a bumbling prosecutor. — Tim Holland

Biggest Loser: Couples
9/8c, NBC
The blue and yellow teams, which were eliminated after the first challenge of the season, return to the ranch after 30 days at home to weigh in and try to win a spot back on the show. After that shake-up in the game, the players get back to business with a grueling football challenge in which the winner receives immunity at the weigh-in. The losing team, however, must overcome a significant disadvantage. — Brie Hearn

Frontline
9/8c, PBS
Do we really need to text, tweet and blog about the minutiae of our everyday lives? Regardless of how you answer, this look at how the Internet and digital technology are changing life as we know it is sure to pique the interest of both netizens and the Internet-phobic. While some segments may seem obvious (multitasking has a negative impact on attention spans — who'd have guessed?), others — such as the real-world effects of virtual immersion — are fascinating. — Jeff Gemmill

Michael Vick Project
10/9c, BET
After making his much-talked-about return to the field with the Philadelphia Eagles in 2009, embattled quarterback Michael Vick is now the focus of a BET docu-series, which chronicles his attempts to rebuild his career and public image following his 2007 conviction for involvement in an illegal dogfighting ring. The series also explores Vick's childhood and how he established the "Bad Newz Kennels" on his Virginia property while playing with the Atlanta Falcons. — Brie Hearn