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NBC topped the first Monday of 2013, thanks to The Biggest Loser and some help from new drama Deception.

Loser averaged 6.3 million viewers and a 2.4 in the 18-to-49 demographic, down 17 percent from Sunday's premiere. Deception followed with a so-so 5.6 million viewers and a 2.0. That's well off Revolution's performance in the timeslot, but the latter had The Voice as a lead-in. Deception did edge out Castle (8.5 million, 1.9) in the demo.

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