She told CBS News about the jealousies among the dancers, saying some would cut the ribbons on other performers’ pointe shoes. “It breaks when you dance,” she says. “This is sabotage.” Acid thrown in face of Bolshoi ballet headBolshoi ballerina keeps vow to her mentorAn American dancer’s leap of faith The walls of the Bolshoi Theater echo with legendary stories of vengeance that go back for more than a century: needles that were found in costumes, broken glass in a ballet shoe. But there’s never been anything this savage. In the weeks before the attack, Filin’s tires were slashed, his email account was hacked and he said he’d received death threats. Filin took over the Bolshoi in 2011. One of his first big decisions created waves: he hired American David Hallberg as a principal dancer, a role that’s usually gone to a Russian. “Every time he takes any artistic decision, it means that somebody is happy and somebody is unhappy,” says Katerina Novikova, who works in the Bolshoi’s front office. “You cannot please everybody.” Amidst the swirl of the investigation, some dancers have taken lie detector tests, but police have made no arrests. And while they continue to question the dancers, sell-out crowds applaud the tales of mystery and intrigue.