The Treatment(2015)

Original title: Die Behandlung

"The Treatment" tells the story of isolated patient Linus. More and more a rigid routine consisting of meals, exercise, lulling music, irritating smoke and examinations by his only attachment figure Dr. Frei causes him suffering. One day Linus notices the massive door to his room has been left ajar and he takes the chance to escape. What he sees outside makes him question: Is he really who he believes he is?