Vanished (2011)

Alexandra Walch, 17, is a cheerful, fun-loving teenager. Her seemingly biggest problem - when she has to be home from the town festival. Father Alfred and mother Anna don't agree. They don't want to take things too seriously on her birthday. But Alexandra doesn't come back at all, not the next morning, not the day after. Soon a violent crime can no longer be ruled out. Inspector Lenz from Vienna is called in. A large-scale search operation is launched. When the body of a young girl is found, the Walchs' worst fears seem to come true.