Massy Tadjedin in her directorial debut exacts good performances from an international quartet of stars, but never shapes her sexual morality drama into something plausible.
Keira Knightley and Sam Worthington play a married couple, Joanna and Michael, whose upscale Manhattan lifestyle hides a shared anxiety that they may have got hitched too young. Out at a party, she spots him being vamped by a hot-eyed work colleague (Eva Mendes) and starts a furious row with him when they get home. With ironic timing, he's off next morning on an overnight work trip with – ta-da! – Miss Hot Eyes, while Joanna just happens to run into an old flame (Guillaume Canet) and agrees to have dinner that night. The flip-flopping between the two tempted couples feels much too calculated, even when the actors are giving their all. Knightley wears a beautiful camel coat, Worthington wears a shirt tucked into his boxers (go figure), while each's expression keeps tweaking up a notch on the angst-ometer. It's quite enjoyable, and the ending is very good – I just didn't believe a moment of it.