9pm, Gossip Girl, ITV2
As the annual Snowflake ball approaches, Jenny ends her friendship with Vanessa when she catches her kissing Nate. Wanting revenge, Jenny offers Vanessa a dress (an incredibly see-through one) under the pretext of mending their relationship. Vanessa accepts the dress gladly, but Jenny starts to have second thoughts. Olympic gymnast Nastia Liukin makes a cameo.
9pm, Eleventh Hour, Living
When three normal 11-year-old boys suddenly die from heart attacks in the small town of Pooler, Georgia, Jacob is called in to work out what happened. As he and Rachel arrive in the town, they notice that there are no children out and about playing. During his investigation, Jacob determines that the cause of the attacks is a kind of poison. But now he needs to figure out what the poison was and how the boys came into contact with it.
10pm, The Unit, Virgin 1
The team head to Mexico to rescue the family of ailing nuclear scientist Dr Rocha in a bid to get the info Washington needs to stop an impending terrorist attack. Meanwhile, the women are finally told the true reason for their displacement, and are given a covert operation of their own.
10pm, The Beast, Five USA
A tip from a double agent leads Barker and Dove to investigate a mathematician suspected of supplying missile secrets to China. Dove goes undercover and discovers the professor had affairs with some of his students, but soon finds himself under suspicion.
