By Ellen Barry, New York Times, Jan 18/19, 2013

MOSCOW — The stories about vengeance at the Bolshoi Ballet go back centuries: The rival who hid an alarm clock in the audience, timed to go off during Giselle’s mad scene, or who threw a dead cat onto the stage at curtain in lieu of flowers. There are whispers of needles inserted in costumes, to be discovered in midpirouette, or — the worst — broken glass nestled in the tip of a toeshoe.

But this ballet-loving city awoke on Friday to a special horror. A masked man had flung acid in the face of Sergei Filin, the artistic director of the Bolshoi, causing third-degree burns and severely damaging his eyes. Video from the hospital showed Mr. Filin’s head covered entirely in bandages, with openings for his eyes and mouth, his eyelids grossly swollen.

Though police officials said they were exploring theories including disputes over money, Mr. Filin’s colleagues at the Bolshoi said they suspected professional jealousy [.....]