8pm, Gossip Girl, ITV2
Olivia tries to prevent Dan from finding out something she said on a talk show, and Blair uses a new friendship to make Serena jealous.

9pm, 10 Things I Hate About You, Fiver
SERIES FINALE Kat gets help from Chastity in staging a protest against the school’s new policies on uniforms and bag searches. Elsewhere, Bianca jeopardizes her just-acquired cheerleader status by sneaking around with Joey.

10pm, Law & Order, Sky1 & Sky HD
SERIES FINALE The investigation into the murder of a jeweller leads the detectives to a prostitution ring run by the victim’s brother-in-law. The resulting trial proves to be a challenge for McCoy, whose career is threatened because of the probe.

10pm, Nip/Tuck, FX & HD
While preparing to operate on Olivia, Sean tries to deal with his feelings for Julia; and Christian meets someone who understands what he’s going through when he attends a breast-cancer support group. Oh and the wonderful Jennifer Coolidge is back as delusional actress Candy Richards.