A kidnapping thriller that unfolds more like a three-character play. It's the first film by British director J Blakeson and it's pretty good. Solidly made, filled with surprising and not ludicrous twists. Poor Gemma Arterton gets to spend the majority of the film handcuffed to a bed but she has her moments too. So many kidnapping films intercut between the kidnappers and the police; this movie is only about one side, and it's a nice twist.
Also, nice music from Marc Canham. I checked him out on IMDB and he's only ever scored video games, including the video game version of Reservoir Dogs. Learning something new every day.