Untraceable fuses Saw with The Net in a perverse yet moralistic story about a psychopath who broadcasts acts of torture over the internet--all to better reveal the twisted underbelly of the American public, who hasten the victims' deaths simply by looking at the website. FBI agent Jennifer Marsh (, her mature-sexy mojo tamped down but still simmering in the corners of her eyes and the nape of her neck) launches a cyberhunt for the killer, only to find herself and her team caught up in his murderous scheme. It's hard to make tapping on a keyboard and staring at a computer screen exciting, but Untraceable does its best by making Marsh and her cybercrimebusting partner (, King Kong) rattle off cascades of jaunty techno-jargon and do impressive bits of long-distance surveillance. The movie aims for the audience that flocked to see Ashley Judd in thrillers like Kiss the Girls and Double Jeopardy, but it's hard to say if fans of Lane's romantic fare like Under the Tuscan Sun or Must Like Dogs will enjoy the queasy violence. Nonetheless, the cast--including Mary Beth Hurt (The World According to Garp) as Marsh's mother--does a solid job and the movie clips along at an aggressive pace, maintaining tension throughout. --Bret Fetzer