CBS’ serialized new drama Hostages was designed for a limited run. The question is how limited. In its third week, the thriller fell to a 1.2 adults 18-49 rating, down 20% from last Monday. That is very low by CBS drama standards. It is the first in-season heavily serialized drama series on CBS in a long time, but Under The Dome did fine over the summer in the same Monday 10 PM, warming it up for Hostages. With two other hot new drama offerings Monday — Fox’s Sleepy Hollow and NBC’s The Blacklist, both already renewed and picked up for a full season, respectively — Hostages is getting rejected by viewers. Given the auspices involved — Jerry Bruckheimer TV and stars Toni Collette and Dylan McDermott — CBS will likely air the entire 15-episode first-season arc. The question is whether it will keep the show on Monday, which needs some propping up. As I noted in my Premiere Week analysis, CBS is vulnerable on Mondays this fall. None of the new shows popped. In its second outing, new comedy We Are Men (1.8) was down 10% from its soft premiere and the secondlowest-rated CBS series behind Hostages. It squandered a large portion of its How I Met Your Mother lead-in (2.9, down 6%) and seems to be hurting its lead-out, 2 Broke Girls (2.2), down 8% to a new series low. Fellow new comedy Mom (2.0) is doing a little better, down 9% but holding onto most of 2 Broke Girls‘ younger viewers.

Besides Hostages‘ 20% plunge, virtually all other series last night saw their ratings shaved off by 10% or less. Fox’s Bones (2.0) was down 6%. Sleepy Hollow (2.7) was off by 10%. NBC’s The Voice (4.5) was down 4%, while Blacklist (3.2) was off by a tenth (3%). It may be adjusted down another tenth because of a minute of Voice overrun. NBC won the night in 18-49 (4.1, 13.3 million) ABC logged a 2.1 for Dancing With The Stars (up 5%) and 2.0 for Castle (down 9%) though the numbers were likely inflated by a local NFL pre-emption.

Related: ‘The Blacklist’ Posts New Live+3 Viewership Record, ‘Sleepy Hollow’ Also Strong

When you take two bubble shows and put them together to fill a night, you can’t expect miracles. So by that token, it’s not surprising that the CW’s new Monday lineup of Hart Of Dixie and Beauty And The Beast opened below par. Still, the numbers are very low, and that with an NFL pre-emption in the No. 1 market, New York. Hart Of Dixie (0.4) was down 43% from last fall’s premiere and down 20% from the finale, tying a series low. Beauty And The Beast (0.4) was down 67% from its series debut last fall when it followed The Vampire Diaries and down 20% from the season finale. In total viewers (1.2 million for both series), the new lineup outperformed last fall’s 90210/Gossip Girl combo and was flat in 18-49 but that is with the New York NFL audience factored in.