Casey Fletcher, a recently widowed actress trying to escape a streak of bad press, has retreated to her family's lake house in Vermont. Armed with a pair of binoculars and several bottles of liquor, she passes the time watching Tom and Katherine Royce, the glamorous couple living in the house across the lake. Everything about the Royces seems perfect. Their marriage. Their house. The bucolic lake it sits beside. But when Katherine suddenly vanishes, Casey becomes obsessed with finding out what happened to her. In the process, she discovers the darker truths lurking just beneath the surface of the Royces' picture-perfect marriage. Truths no suspicious voyeur could begin to imagine -- even with a few drinks under her belt. Like Casey, you'll think you know where this story is headed. Think again. Because once you open the door to obsession, you never know what you might find on the other side.