Vězení [Prison]

During the Cold War, a secret prison was built by the Secret Service in one anti-nuclear bunker . This place was used for the temporary imprisonment of various agents of other secret services. We probably would never have known about the place if it weren't for one CIA agent ... He managed to escape from prison under circumstances that have not yet been explained. As a result of the leak, the prison was considered discredited by the Secret Service and was no longer used. Over time, it fell into oblivion. After the regime change, the premises were returned to the original owner, who discovered the prison in an almost intact state... However, so far no one has been able to find out how the agent managed to escape from the prison without being betrayed... Can you make it before the changing of the guards time runs out?