More alarming ratings news for NBC. (And the network has had a ton of those lately – it just got beaten by USA on Monday!) Despite airing reruns of rookies Prime Suspect and Whitney on Monday and Wednesday this week to get additional sampling and boost the ratings for the originals, the opposite happened last night. Both series were down 13% week-to-week in the 18-49 demographic to a 2.0/5 and 1.3/3 among adults 18-49, respectively. That despite the extra exposure (NBC also is running Whitney and Prime Suspect repeats on Friday and Saturday) and the fact that all other NBC series that preceded the two freshmen were up — Community (1.7/5, up 13%), Parks & Recreation (2.1/6, up 5%), The Office (3.2/8, up a tenth). In the case of Prime Suspect, NBC only ordered additional scripts, but Whitney has a back 9 order. If the slide continues, we may see that cut back.

With its 1.3 demo rating, Prime Suspect tied ABC’s Charlie’s Angels as the second lowest-rated program of the night behind the CW’s Secret Circle (0.8/2). Suspect and Angels were both beaten by the CW’s The Vampire Diaries (1.4/4) Still, for Charlie’s Angels that was an improvement from last week’s dismal 1.2 demo rating and a sign that the show may have bottomed out. Charlie’s Angels didn’t get the ax last week when many expected it. Will the small uptick buy the reboot more time? ABC may do what it did with Happy Endings and give it a script order to keep its options open. The rest of the ABC lineup was also up. Grey’s Anatomy (3.4/9, 9.7 million) rebounded from last week’s series low, up by 10% in 18-49 and by 1 million in total viewers. Private Practice (2.4/6, 6.7 million) was up 14%.

Fox’s X Factor (3.6/10, 10.9 million) was down two tenths from last Thursday’s fast national. The network still won the night in 18-49.

CBS’ The Big Bang Theory (4.4/14, 13.3 million) matched its fast-national numbers from last week and once again ranked as the top program of the night in 18-49 and total viewers. The Big Bang rerun (3.7/10, 12 million) provided vast improvement in the 8:30 PM slot over canceled How To Be A Gentleman (2.5/7). It ranked as the second highest rated program of the night behind the Big Bang original, beating X Factor and Grey’s Anatomy. With a much stronger lead-in, rookie drama Person Of Interest (2.7/7, 12.6 million) saw only a modest bump, was up 2 tenths in the demo from its fast national number last week, one tenth from the final. At 10 PM, The Mentalist (2.5/7, 12.3 million) was down 2 tenths in the demo from last week. CBS (3.1/8, 12.2 million) won the night in total viewers and was second in 18-49.

CW’s Vampire Diaries (2.8 million viewers, 1.4/4 in 18-49, 1.6/5 in 18-34) was up 7% in viewers, 17% in 18-49 and 14% in 18-34. It doubled time slot rival Charlie’s Angels’ 18-34 delivery. The newly renewed Secret Circle kept steady.