Olga Kameneva, feminist and head of the Russian Theatre in post-revolutionary Russia, lived through the heady days of the early Revolution. As the wife of one of Stalin's inner circle and sister of Leon Trotsky, she was on shaky ground when Stalin targeted both as political enemies, and she herself was soon consigned by Stalin to the 'dustbin of history'. In The Impossible History of Trotsky's Sister, she is given another, imagined...