CRIMEA, 1914 When the Tzar's head of security is assassinated, Erast Fandorin is called to investigate: the killer has been overheard mentioning a 'black city' so Fandorin and his trusty companion, Masa, head to Baku, the burgeoning Russian capital of oil. But from the moment they arrive in the city - a hotbed of corruption and greed by the Caspian Sea - they realise someone is watching their every move, and they will stop at nothing to derail their investigation. Having suffered a brutal attack and with Masa's life hanging by a thread, Fandorin is forced to rely on the help of an unexpected new ally, and he begins to suspect the plot might be part of something larger - and much more sinister. With war brewing in the Balkans and Europe's empires struggling to contain the threat of revolution, Fandorin must try and solve his most difficult case yet - before time runs out.

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