The Witches of St. Petersburg - Imogen Edwards-Jones

Two Montenegrin princesses, Militza and Stana, are married into the Russian aristocracy of the last Tsar by their father. Initially shunned by society and, in Stana's case, married to a man she detests, life isn't easy. Fascinated by the occult, the sisters soon become close to the Tsarina Alexandra who is willing to try anything to precipitate the birth of the son and heir the country longs for. If she puts her faith in them, Militza and Stana promise they can help the Tsarina produce a boy. The girls hold seances, experiment with a variety of rituals and bring various men to the Tsarina who they feel have spiritual power. Their closeness to the Empress and power in court is undisputed: until, that is, Grigori Rasputin arrives. Militza and Stana, along with most of female Russian society, are intoxicated, but by bringing Rasputin into their lives, have they taken a fatal step too far?