CBS’ Mom is starting to settle into its temporary Thursday 9 PM slot, where the sophomore comedy is being tested with a couple of airings. Last night, Mom drew a 2.2 in adults 18-49, up 10% (.2) from its first outing at 9 PM last week. The Big Bang Theory (3.7) kicked off things for CBS on a higher note, up 9% from last week’s fast national. That helped The Odd Couple (2.2), which was up a tenth at 8:30 PM in its campaign to secure a renewal. Maybe it was the Big Bang repeat lead-in taking hold at 9:30 PM, but Elementary (1.4) had a nice bump at 10 PM (17%) to wrap across-the-board gains for CBS, which won the night in 18-49 (1.9) and total viewers (9.6 million).

After a break last week to make r16-scandaloom for a two-hour Grey’s Anatomy block, ABC’s Scandal (2.4) was up 14% in its return. The thriller likely was boosted by its main competition, NBC’s The Blacklist, airing a rerun last night (and maybe by the return of Papa Pope). With Scandal back as a lead-in, American Crime (1.1, +22%) rebounded after taking an 18% tumble last Thursday, when it followed Grey’s Anatomy. 

Fox’s Bones (1.0) and Backstom (0.7) each slipped a tenth to series lows, with the newbie hitting the dreaded 0.7 demo rating. NBC’s only original last night was Dateline at 10 PM (1.1, even).

16-vampire-diariesThe Vampire Diaries aired its first original in a month and the first since star Nina Dobrev announced her pending departure. Maybe fans didn’t get a memo that the vampire drama was back as it drew a 0.6 in 18-49, down a tenth from its last episode; that would tie a series low in Live+Same Day if there is no upward adjustment in the finals. But Reign (0.4), also back from a monthlong break, was up a tenth.