A dark evening, a crime writer Peter Sander, drives through a forest when his car runs out of petrol . A little distance from the road there is a house with lighted windows, and he goes there to borrow a phone. Suddenly he trips over a tree root and sprain one foot . He lags up the forest road . Then there is a shot, a moment after running steps. A beam cuts through the dark. It goes out . The steps moves away. Peter gets up and stomps up to the house . No one responds to his knokking.