'The Vampire Diaries' love-triangle seen by 3 million on The CW

The Vampire Diaries' audience rallied last night (Thursday), also recording an impressive demo score.

The Damon-Rebekah drama in 'Dangerous Liaisons' attracted 3m (1.2) to The CW in the 8pm hour, its highest rating since January 5.

The Secret Circle also rose in viewers at 9pm on the network, recording 1.8m (0.7) for its latest instalment.

American Idol climbed to 17.9m (5.7) for Fox, then 6.3m (2.3) tuned in for The Finder.

Meanwhile, CBS's latest Big Bang Theory amused 16.1m (5.5), after which Rob had 11m (3.4), and Person of Interest soared even further to 15.1m (3.3). The Mentalist rounded things off with 14.4m (2.2).

Grey's Anatomy grew to 10.1m (3.9) for ABC at 9pm, while Wipeout fell to 5.2m (1.5) at 8pm, and 6.6m (2.3) watched Private Practice at 10pm.

Comedies 30 Rock (3.9m/1.6), The Office (5.2m/2.5) and Up All Night (3.7m/1.8) aired to modest audiences on NBC between 8pm and 10pm. The Peacock Network's Voice repeat at 10pm entertained 3.5m (1.5).