Nelson Franklin and Kris Marshall

Traffic Light signaled an increase this week to 4.1 million viewers — up from last week's 3.6 million, but still well below the premiere's 4.6 million two weeks ago. Fox's relationship comedy also leapt 21 percent to a 1.7 rating in the advertiser-coveted 18-to-49 demographic.

NCIS pulled in 21.3 million people, up from 19.5 million last week, and enjoyed a 22 percent increase, while Glee got about the same total viewership as the previous week, 10.5 million.

Read out Glee episode recaps

Also in prime time's first hour Tuesday, The Biggest Loser: Couples stayed relatively flat at 6.6 million on NBC, as did No Ordinary Family on ABC with 4.8 million viewers. The CW's One Tree Hill  nabbed nearly 2 million viewers, a 25 percent increase in total viewers and among women 18 to 34.

Loser saw its usual gain in its second hour at 9/8c (8.3 million), while Fox's Raising Hope got nearly 6.2 million. ABC's V was down to 5.1 million, while the CW's Hellcats held steady at 1.7 million. Like its forebear, CBS' NCIS: Los Angeles rebounded at 9/8c, attracting nearly 18.6 million viewers.

Get the rest of today's news

In prime time's final hour, CBS' The Good Wife garnered 11.5 million viewers at 10/9c, NBC's Parenthood drew 5.4 million, ABC's Primetime: What Would You Do? had nearly 4.8 million (less than the 5.2 million Detroit 1-8-7 got in the same time slot last week.

Meanwhile, these are heady days for the CW, which is up for the entire season 11 percent among 18-to-49-year-olds and 6 percent in total viewers, according to Nielsen data through Sunday.

[Update: An earlier version of this story stated that NCIS had defeated Glee in the 18-49 demo, based on preliminary figures from Nielsen. Final Tuesday ratings show that the two shows, in fact, tied with a 4.4 rating in the demo.]