Saturday Primetime Results:

NBC tied for #1 among the Big 4 networks in 18-49 Saturday night, with "Dateline Saturday Night Mystery" leading the 8-10 p.m. time period among those networks and a 10 p.m. encore "Believe" ranking #2 in that slot.

· "Dateline Saturday Night Mystery" (0.8/3 in 18-49, 5.4 million viewers overall) won the time period among ABC, CBS, NBC and Fox in adults 18-49 and was also #1 in total viewers and adults, men and women 25-54. "Dateline Saturday Night Mystery" grew throughout its two hours, with this half-hour by half-hour 18-49 track: 0.5, 0.8, 0.9, 1.0. From its first half-hour to its fourth, the special grew by 100% in 18-49 rating, 100% in adults 25-54 (to a 1.6 rating from a 0.8) and 70% or 2.7 million persons in total viewers (to 6.5 million from 3.8 million). "Dateline Saturday Night Mystery" finished within 0.1 of a point of last week's debut 0.9, which matched NBC's best 18-49 rating in the slot, excluding sports, since Sept. 15, 2012.

· In total viewers, "Dateline Saturday Night Mystery" is up week to week by 3% (5.324 million vs. 5.184 million), making last night's result NBC's biggest overall audience in the time period, excluding sports in three years (since March 5, 2011, 5.420 million).

· A rebroadcast of Monday's "Believe" premiere (0.8/3 in 18-49, 4.1 million viewers overall from 10-11 p.m. ET) ranked #2 or tied for #2 among ABC, CBS and NBC in all key measures. From half-hour to half-hour, the "Believe" encore maintained its rating in adults 18-49 (0.8 vs. 0.8) and most other key measures, despite the 10 p.m. hour. In total viewers, the 4.1 million is NBC's biggest audience in the time period, excluding sports since Nov. 9 ("Miss Universe," 4.419 million that hour). "Believe" debuts in its regular time period tonight at 9 p.m. ET.

In Late-Night Metered-Market Household Averages for Saturday night:

· An encore telecast of "Saturday Night Live," with host and musical guest Drake, averaged a 3.2/8 in household results in Nielsen's 56 metered markets and a 1.5/7 in adults 18-49 in the 25 markets with Local People Meters, making it the #1 telecast of the night on the Big 4 networks in 18-49 rating in the Local People Meters ahead of all primetime programs on the Big 4 networks.

NOTE: All ratings are "live plus same day" from Nielsen Media Research unless otherwise indicated.