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Dizzying adventures, mysterious symbols, dangerous secrets in the best traditions of The Da Vinci Code!

Professor Langdon regained consciousness in a hospital in Florence. How did he end up here? Why did they want to kill him? And how did he get to the Italian city full of ancient secrets? Robert remembers nothing. Only in his nightmarish visions he sees a woman with a strange amulet begging for help. And in his pocket he finds a reference to Botticelli's painting "The Map of Hell". But the painting has been strangely altered...

Messages encoded in works of art, secret tunnels and the latest technology - this is what awaits Langdon and his assistant Sienna on their way to solving the mystery of the mad genius. But an unknown enemy is one step ahead of them...