A heart attack?! An opening embedded in fiction, where uncertainty and indecision arise in the audience, questioning whether what they saw and are still seeing on the stage is fiction or reality. Should they call an ambulance, should they stop the performance, or not? The analysis of an alternative theatrical performance (Boris Liješević Serbian theatre director’s interpretation of Lorenzaccio, 2019,) where the emphasis is not on revealing the distinction between fiction and reality, but on the process itself that resulted in uncertainty.