Monday’s episode of “CSI: Miami” that introduced characters from upcoming spinoff “CSI: New York” achieved the sophomore series’ best demo score to date, according to preliminary nationals from Nielsen, powering CBS to an easy victory on the night.

From 10 to 11, “CSI: Miami” (8.7/22 in adults 18-49, 22.6 million viewers overall) beat the combined ABC-NBC competish by 15 shares in adults 18-49 with a score that’s a tick higher than its series premiere in September 2002. CBS also won in key demos from 9 to 10 with “Everybody Loves Raymond” (5.7/14 in adults 18-49, 15.9 million viewers overall) and “Two and a Half Men” (5.7/14 in adults 18-49, 15.3 million viewers overall).

NBC edged out Fox for second on the night in 18-49 behind a winning result at 8 for “Fear Factor” (5.0/15 in adults 18-49, 12.0 million viewers overall) and a strong silver-medal finish at 9 for the season finale of freshman drama hit “Las Vegas” (5.2/13 in adults 18-49, 13.0 million viewers overall).

Fox was solid but unspectacular with an “American Idol” spec at 8 (4.1/12 in adults 18-49, 10.6 million viewers overall) and “The Swan” at 9 (4.2/10 in adults 18-49, 9.4 million viewers overall), while ABC didn’t create too much excitement for its spec “Motown 45” (2.9/8 in adults 18-49, 9.2 million viewers overall).

Preliminary 18-49 averages for the night: CBS, 5.7/15; NBC, 4.3/11; Fox, 4.2/11; ABC, 3.0/9; WB, 1.9/5; UPN, 1.1/3.

In total viewers: CBS, 15.7 million; NBC, 10.5 million; Fox, 10.0 million; ABC, 9.4 million; WB, 5.1 million; UPN, 2.7 million.