One diamond - a world of spies, death and deception.

In Venice, the diamond promises wealth and prestige to greedy Bernardo Pagliarin.

At the court of the Great Moghul in Agra, it holds the key to the throne itself.

For Filippo and his family, the stone is worth far more. It could bring their father back from the dead.

From the bustling markets of seventeenth-century Venice to the majestic palaces of Hindustan, acclaimed author Jamila Gavin takes the reader on an unforgettable quest across desert, sea and mountains.