Definitely a movie to catch in theaters: super absorbing, incredibly tense and well-acted. I found it particularly it interesting that the suspense sequences (6 or 7 all told) each play out differently- sometimes cinematically, sometimes deliberately not. Character development's a mixed bag; it relies on standard movie types to pull us in. To the filmmaker's credit, she does turn around and play with audience expectations at times, but better illustrated motives or back stories may have rung truer. I'd give it five stars straight up, but reserve that for films that leave me with an adrenalin rush-- this movie may intend the opposite. For this reason I might revise my score one day, but for now it's a see-for-yourself 4.