"Spoiler Alert???" It's no secret that in grand opera, characters suffer and die, but in Puccini's "Tosca" the baritone gets stabbed, the tenor gets shot, and the soprano leaps to her death. What you might not know is that "Tosca" is the most error-prone production in history. If it CAN go wrong, it WILL go wrong in "Tosca." Nickel City Opera impresario Valerian Ruminski tells WNED's Peter Hall about some amusing mistakes over the last century. Tosca is live on stage at the Riviera Theatre on Webster Street in North Tonawanda, Friday night at 8:00pm and Sunday afternoon at 2:30.