On 17 February 1920 a young woman was rescued from a Berlin canal and taken to a local asylum. Her body bore the scars of bullet and bayonet wounds. For a long time she refused to give her name and was known as Fraulein Umbekannt (Miss Unknown). When she did declare herself - as the Grand Duchess Anastasia, youngest daughter of the murdered Romanovs - she became the centre of a storm of controversy that continues more than ten years after her death. Kurth's extensively researched account sets out to show that the evidence for Anna Anderson being the true Anastasia is overwhelming. Nevertheless, the extraordinary secrecy which still shrouds some of the key evidence suggests that, as her uncle the Grand Duke of Hesse wrote, an investigation of her identity could be "dangerous".