Psychopath's complex

For several decades in Prague, there has been a mysterious disappearance of people. The police suspect it could be the work of a serial killer. But despite all the effort, they have never been able to find any evidence to confirm this hypothesis. You were on a trip with friends in the center of Prague. The last thing you remember was a festive drinking after closing time in some tavern. Suddenly, you wake up locked in some prison. You don't know where you are or how you got here. From the screams behind the walls, you assume you are not alone. Your nightmare begins.