Let me out - The Russian Sleep Experiment (2015)

Russia, 1978. Four soviet researchers carry out an important human experiment on five American prisoners, including spies, diplomats and soldiers. An anti-sleep gas is introduced into the prisoners' cell, separated from the laboratory by a thin wall. During the experiment something goes wrong, the prisoners show signs of imbalance such as paranoia and self-harm. Even the Soviet army cannot handle the situation. Based on the famous creepypasta tale "The Russian sleep experiment".