'Root Cause', the 13th episode of the CBS crime drama, gripped 14.9m and a 18-49 demo rating of 3.3 at 9pm.
The Big Bang Theory (8pm) was the network's biggest show of the night with 16.4m (5.4), while Rob (8.30pm) slipped to 11.3m (3.4).
The Mentalist rounded off a decent night for the Tiffany Network with a respectable 13.5m (2.8).
Meanwhile, American Idol stayed solid with 17.1m (5.4) on Fox at 8pm, after which 6.9m (2.4) watched The Finder.
The Vampire Diaries climbed to 2.7m (1.2) on The CW. The Secret Circle followed with 1.8m (0.7).
Grey's Anatomy (9.6/3.5) and Private Practice (6.7m/2.3) did well for ABC, but Wipeout slumped to 5.9m (1.8).
Elsewhere, NBC's 8pm instalment of 30 Rock (3.2m/1.3) and The Office at 9pm (5.3m/2.7) sunk to all-time lows on NBC. Parks and Recreation rose to 3.7m (1.8) at 8.30pm, while Up All Night amused 3.8m (1.8) at 9.30pm.