Knochenwald (2000)

The insane and violent criminal Mike Mansfield has escaped the Baltic Sea psychiatry. He retreated into a cottage in the nearby woods. Driven by an insatiable lust for blood and hidden behind an emotionless gas mask, Mike Mansfield is waiting for his victims. There comes a small group of campers, who just wanted to spend their weekends in the forest, just right. The fight for survival begins and soon the group's last survivor faces a hopeless situation. There is no escape from the bone forest .....