In the Lake of the Woods is four things at the same time: a thriller, a Vietnam war book, a love story, and a parable on storytelling. It is layered accordingly, with flashback chapters interspersed between shorts and quotes from the investigation and the main storyline. This makes for a formulaic but effective novel. Some will find the ending unsatisfactory, but this is where the parable on storytelling comes to fruition.
Most of Tim O'Brien's work seems to be related more or less closely to the Vietnam war, of which he is a veteran. Here it forms but a background to the failed political career of John Wade, the protagonist. The book begins as Wade retires to the seclusion of a northern lakeside cottage with his wife Kathy. Wade's secrets reach farther back than his two-year stint in the south Asian jungle. But as Kathy leaves without warning, the plot comes to revolve around her disappearance. O'Brien makes a convincingly intricate rendering of the relationship between the Wades, itself at the heart of Kathy's vanishing trick. The onion is slowly peeled and the story well paced. Both entertaining and interesting.