From a CBS press release:
"NCIS" Wins Time Period with Its Largest Premiere Audience Ever
"The Mentalist" Mesmerizes 15.5 Million Viewers in Strong Debut
11.4 Million Viewers Welcome "Without a Trace" to Its New Time Period
All Three Dramas Post Year-to-Year Time Period Increases in Viewers
CBS is the Only Network to Post Premiere Tuesday Year-to-Year Increases with Double Digit Percentage Gains in Viewers and Key Demos
CBS placed first in viewers on premiere Tuesday with its largest audience on the night since 2001, led by NCIS which posted its largest premiere audience ever, the strong debut of THE MENTALIST and the seventh season premiere of the relocated WITHOUT A TRACE, according to preliminary Nielsen live plus same day ratings for Sept. 23.
CBS was the only network to post year-to-year premiere Tuesday increases, notching double digit percentage gains of +24% in viewers (14.88m from 11.98m), +10% in adults 18-49 (3.3/09 from 3.0/08) and +12% in adults 25-54 (4.6/11 from 4.1/10).
At 8:00 PM, the season premiere of NCIS (P) won its time period in households (11.2/18), viewers (17.72m), finished second in adults 25-54 (5.2/13) and adults 18-49 (3.5/10). Compared to last season's premiere, NCIS was up +27% in households (from 8.8/14), +16% in adults 25-54 (from 4.5/11), +9% in adults 18-49 (from 3.2/09) while adding +3.79m viewers (from 13.93m, +27%). This is the best premiere delivery ever for NCIS in households and viewers, matches the best adults 25-54 premiere performance and is the second best premiere delivery in adults 18-49 (behind 2005).
At 9:00 PM, the series debut of THE MENTALIST (P) was second in households (9.9/15), viewers (15.55m), adults 25-54 (5.0/11) and averaged a 3.5/09 in adults 18-49. Compared to the time period premiere last year (THE UNIT), THE MENTALIST was up +48% in households (from 6.7/10), +28% in adults 25-54 (from 3.9/09), +25% in adults 18-49 (from 2.8/07) and added +4.82m viewers (from 10.73m, +45%).
The season premiere of WITHOUT A TRACE (P) was second in households (7.5/12) and viewers (11.39m), topping its incumbent time period drama, while averaging a 3.7/09 in adults 25-54 2.8/07 in adults 18-49,
For the night, CBS was first in households (9.5/15) and viewers. Updated Tuesday ratings will be available this afternoon.