By James Hibberd
February 08, 2012 at 04:18 PM EST

This is a bummer: ABC’s promising thriller The River got off to a relatively modest start in the ratings Tuesday night.

The two-hour opener averaged 7.5 million viewers and a meh 2.4 rating in the adult demo, up 4 percent from the comparable debut of Off the Map last year. Moreover, the show lost a 10th of a rating point each half hour during its run. The news is a bit surprising considering how successful ABC has otherwise been at launching new shows this season, often delivering stronger premiere ratings than expected. This isn’t a lethal number, but I think most expected (and certainly hoped for) something bigger.

ABC also aired two episodes of Last Man Standing (7.9 million, 2.4), down slightly from a few weeks ago. The second half hour featured a guest appearance by Kim Kardashian (yes, I agree, but her episode did slightly better than the first).

So what did well last night? The 200th episode of the indestructible NCIS (20.8 million, 4.1), steady in the demo. It was followed by the slightly destructible NCIS: LA (16.1 million, 3.1), down 6 percent. At 10 p.m., new regular cast member Jane Curtin appeared on Unforgettable (11.7 million, 2.2). CBS won the night in the demo and viewers.

Fox was a close second in the demo with Ricky Martin guest-starring on Glee (7.7 million, 3.2), down 14 percent from last week’s Michael Jackson episode. New Girl (6.9 million, 3.5) was steady and Raising Hope (4.7 million, 2.2) rose 10 percent.

NBC had Biggest Loser (6.4 million, 2.2) was up 5 percent and Parenthood (4.6 million, 1.6.) fell 6 percent to a series low. The CW had 90210 (1.4 million, 0.7) and Ringer (1.1 million, 0.5).

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