Zatvorenik [The Prisoner]

The prisoner has been sentenced to death for a murder he did not commit. He knows that the murderer is one of the guards in the prison, but he chose death over revealing the killer’s name. The prisoner is being taken for execution. You are a group of judicial investigators who firmly believe in his innocence. Since all legal means have been exhausted, you clandestinely enter the guard’s room and have 60 minutes to find the weapon used in the murder, discover the name of the guard who is the killer, and exit the room.