A crossbow killer terrifies a suburban community, and his latest targets are three co-workers house-sitting for the weekend. Lauren (Melanie Lynskey), the optimist, has invited her department from work, but only two show up: socially awkward Grace (Mary Lynn Rajskub), who's terrified of leaving her house, and outspoken Gina (Sheeri Rappaport), who expected a bigger crowd, and doesn't want to be stuck with these two all weekend. Their unease with each other soon yields to the awful possibility that they might be the serial killer's next victims, as the telltale signs of his modus operandi accumulate. This is a low-budget movie that makes good use of its "claustrophobic" production by turning a few horror conventions on its head. It substitutes bright, unfiltered daylight for night, obscuring the stalker while making his targets vulnerable; they can't escape while their every movement is visible. The women are trapped without electricity, shrouding them with natural indoor lighting and shrinking their environment even further. Ambient sound is kept to a minimum, to make room for the smallest aural clues of the killer's presence. Occasionally it's punctuated by the trampling of the stalker's feet overhead, which seems to mirror their nervous, galloping heartbeats. The three actresses play well off each other, with lots of comic interplay to relieve the tension. Grace seems thrive on nervousness, while Melanie plays the calm at the center of the storm. Sheeri's performance covers the emotional extremes. She projects her feelings of frustration, rage, and despair, and it seems as if it's on behalf of all three. She takes a confrontational approach with everyone, including the killer, and as a result, is able to discover the true face of the terror that hunts them. While "Claustrophobia" uses some of the same imagery of serial killer movies, its approach is lighter and more playful, and manages to avoid resorting to cheap exploitation, without sacrificing the sense of intimacy with the characters necessary to relate to their terrifying experience. Maybe that's because it seems its subtext is empathy: Even as their community remains ignorant of what's happening in broad daylight,the killer seems to understand their every weakness, to prey on them. Meanwhile, the "shooter" on the opposite end, the camera, seems to work against the killer's agenda, trying to avoid taking his point of view, and not allowing the three women to be reduced to mere targets. Because of this approach, we're not so much voyeurs while watching this, but participants. Sheeri Rappaport wrote of her experiences in earlier horror film, "Little Witches", of the difficulty in starring in a movie where the agenda and desires of the producer and the audience can be very different than that of the performer. `Claustrophobia' seems to offer an opportunity for all three points of view to meet on common ground. I recommend this not only as a horror film, but also as a unique take on the genre, and a good opportunity to see these actresses in a different light. Don't forget to turn the sound up!