IMDB: An affluent family take holiday at their lakeside home and soon encounter two young men who, without cause or provocation, turn their vacation into a living hell. The why is unimportant and, in fact, never really made clear. It is the how, the layout of the nightmare, which takes you by surprise and leaves you in utter disbelief. Like stumbling upon a horrific traffic accident, you instinctively feel the need to look away and at the same time you cannot bring yourself to avoid witnessing the carnage. Summary written by Matt Lauer (mattlauer@aol.com)