Versteckte Fallen(1991)

Claudia and Georg Rattey, a married couple, have everything what people in their mid-thirties might wish for: a car, a farmhouse for vacations on the weekends, and their son Oliver. But their contentedness does not turn into happiness but into an inner void: Claudia and Georg have nothing left to say to each other and just live alongside each other. One day, they discover a ten-year old burglar in their half-finished vacation home.