‘Sudden Russian Death Syndrome’ strikes again as bank vice-president Kristina Baikova, 28, dies in mystery

In April energy boss Igor Shkurko was found dead in his prison cell after he was accused of taking a bribe. Dan Rapport, a well-known Putin critic, was found dead after plunging from his Washington DC luxury apartment building last August. His wife has refuted claims of suicide. Weeks later, oil boss and vocal Putin critic Ravil Maganov fell from a window at a hospital in Moscow and died.