While it’s doubtful Castle would be able to do this well without DWTS’ support, the series did show promise in its second week. The Nathan Fillion vehicle joined forces with the ballroom hit to give ABC another double win last night.

8pm

• Dancing with the Stars (21.1 million, 5.3/14 in 18-49) slipped by 1.4 million.
• House (12.8 million, 4.8/13) checked in 700,000 more.
• The Big Bang Theory (9.8 million, 3.7/11) was up 300,000; How I Met Your Mother (9.2 million, 3.8/10) grew by 700,000.
• Chuck* (3.9 million, 1.3/4) dropped 1.8 million.
• Gossip Girl (1.1/3) returned to 2.2 million.

9pm

• Two and a Half Men (14 million, 4.8/12 in 18-49) rounded up 700,000 more.
• Rules of Engagement (11.4 million, 4.0/10) improved by 1.4 million.
• 24 (11.3 million, 3.7/9) was down slightly.
• Heroes* (3 million, 1.1/3) gave up 3.6 million.
• One Tree Hill (1.2/3) turned in 2.3 million.

10pm

• CSI: Miami (13.4 million, 3.8/10 in 18-49) lost 800,000.
• Castle (11.5 million, 3.1/8) was off by only 100,000.
• Medium* (4.3 million, 1.3/4) drew in 2.8 million less.

*denotes repeat

(You can review last Monday’s ratings here.)