In the aftermath of the Trojan war, a series of unrequited loves threatens to destabilise the fragile peace. But for a spurned Spartan princess, there are only two options left: forgiveness and murder. The most ambitious and innovative of all Rossini’s operas, Ermione was a calamitous failure on its opening night at the Teatro di San Carlo 200 years ago. It now returns to the Neapolitan theatre i...