DESC: Kat Ellis's (Debra Messing) worst nightmare is about to come true. Not only is her younger, half-sister, Amy (Amy Adams), getting married before her, but to add insult to injury, the groom's (Jack Davenport) best man is Kat's ex-fianc?e, Jeffrey (Jeremy Sheffield). Two years after being dumped, Kat is a single New Yorker and can't bear to attend the festivities at her parent's London home alone, so she does the next best thing: she hires an escort to play her boyfriend. Her rented date, Nick (Dermot Mulroney), fits the bill perfectly. He's handsome, intelligent, well spoken, intuitive, and a perfect gentleman--a virtual bargain at $6,000. The plan? Make Kat's ex sorry that he ever let her go. But the plan takes a turn when Kat finds herself attracted to Nick, and the feeling seems to be mutual. But will their business arrangement stand in the way of a relationship? And just what is it that Kat's ex has been dying to tell her? Messing is endearing as Kat, who seems to be simultaneously bewilder...