Here's the plot: a guy's wife is murdered. Or so he thinks. Years after her death, he gets a mysterious e-mail telling him to go to a street-cam link at a certain time. He does, and there on camera is his wife. (Let me say right here that Coben has already used more variations on the current photo of a person supposedly long dead than any living writer, and it seems he's just getting warmed up. I've heard that his latest novel has yet another one.) So anyway, the guy decides to find his wife and find out what's going on. Complications and plot twists start to pile up.
If you've read the novel, the complications and plot twists won't surprise you, though there are some little differences toward the end. The movie's still fun, though. The acting's fine, and there's one change from the novel that works really well: the sadistic baddie is a woman. (This is not revealing anything about the plot.) There's also an extended chase scene that works pretty well, even though it adds to the length of a movie that could have benefited by losing a few minutes. All in all, though, very entertaining.