Darkness falls on Christmas Eve, and Angela (Rachel Nichols), a young, workaholic executive, is still at her desk, despite phone calls from her family reminding her to get a move on. Finally leaving the by-now deserted condo, Angela heads down to the level 2 underground parking lot – the P2 of the film’s title – and gets into her car. Which doesn’t start. Luckily, security guard Thomas (Wes Bentley) is on hand in the parking office, where he’s clearly going to be enjoying Christmas alone (apart from the homicidal-looking Rottweiler he keeps chained up), and offers a friendly hand. Trouble is, Thomas is one of those quiet, Norman Bates types who has been watching Angela for some time and wants her to stay for dinner.