Money, love, professional jealousy - the three undying motives for personal crime, and all three were present in the Bolshoi Ballet acid trial. An international public that scoffed happily at the OTT ballet horror-show that was the film Black Swan was suddenly sobered up by real-life events that needed no cinematographers and screenwriters.

Access and trust are the key issues facing any documentary director, especially when the film concerned touches on questions that arouse controversy in society. It’s a long time since I've seen a work that achieved so much on those two fronts as Pussy Riot – A Punk Prayer. The HBO-Storyville documentary by double directors-producers Mike Lerner and Maxim Pozdorovkin tells the brave story of the Russian conceptual art, feminist punk collective.

The Bolshoi left it till last to be most itself, to dance a ballet that is truly of its blood, its seed - its closing on Alexei Ratmansky's The Flames of Paris will leave much happiness in the memory to override the problematic productions of classics, the unidiomatic Balanchine and the awful backstage events. Here at last, in a work by the most gifted of recent Bolshoi directors, you met on stage young people who dance, who act, who love the theatre, fresh in their performing, skilled in their means, open-hearted in reaching the audience, and loved right back.

The Bolshoi Theatre reopened in late autumn 2011 after a problematic six-year refurbishment said to have cost a tidy billion dollars, many times its original estimate thanks to corruption - it needed a corker of a ballet premiere to pop the eyes of a cynical Russian public, and it set upon a new staging of The Sleeping Beauty. This was also problematic, as three years earlier it had been promised to the then ballet director Alexei Ratmansky, who had soon afterwards resigned his job, wretched and miserable with the corrosive relationships within the theatre.

It’s unspeakably bad for so many reasons that the injured Bolshoi Ballet director Sergei Filin cannot be in London to see his company perform, and one is that he can’t see his protegée Olga Smirnova revealing herself to us as destined to be one of the great ballerinas of this era. Smirnova was signed in 2011 by Filin from the Vaganova Academy in St Petersburg, the Mariinsky’s nursery, whose combination of regal style and gossamer delicacy is evident through every fibre of this miraculous young dancer’s movement.

Everyone must be wishing the Bolshoi Ballet a swift return to company health after the tragic events of this year, as well as a return to physical health by their horribly injured artistic director - in the circumstances it’s heroic that they have got to London at all, let alone in such good performing order as they showed last night. Many of us will be wishing they had got themselves a worthy production of Swan Lake too, but they haven’t, and so the first night of their three-week visit to Covent Garden was not the glowing triumph it should be in the film script.

When a person is happy in his work, he does his best. So best ignore what Sergei Polunin says on the page of a newspaper and look at what he does on stage. Now there’s a happy boy. Polunin is the one reason to see the Stanislavsky Ballet at the Coliseum on this short visit, though it's always a pleasure to hear Delibes’s divine score to which Roland Petit created a short, pert, thin and very French version of Coppélia, chockful with kisses.

Just a fortnight before Russia's great Bolshoi Ballet lands in London for its splendid summer tour, it has now added a lost chief executive to its tally of a blinded ballet director, an arrested dancer, and a sacked star.

“Charming” is undoubtedly a double-edged word. Along with its perfumed allure, it carries a whiff of insincerity, of something slick and not quite earned. Add “whimsical” and you know you’re in danger of saccharine overload.  Chagall is both, plus he’s one of the most popular artists of the 20^th century. Does it get any worse?

The celebrated star of the Bolshoi, Nikolai Tsiskaridze, has been told his contracts will not be renewed when they expire at the end of this month - an effective dismissal for Russia's flamboyant and outspoken ballet icon.