The Pindar Diamond

In Hickman's coincidence-heavy latest (after The Aviary Gate), Paul Pindar, a 17th-century English merchant working in Venice, is obsessed with the Sultan's Blue, a 322-carat diamond coveted by every collector in the plague-ravaged city. Pindar, broke from drinking and gambling, needs the diamond to ransom his captive love from a sultan's harem. Intertwined with his story are those of Sister Annetta, a convent novitiate who alone knows how the Sultan's Blue came to Venice, and Maryam, an acrobat charged with escorting a crippled mute and her deformed newborn (who might be a mermaid) to Venice. When Pindar learns that the Sultan's Blue will be the prize in a high-stakes card game, he desperately tries to scheme his way to the table, going against warnings from fellow traders Ambrose Smith, a covert intelligencer, and John Carew, a friend with his own secret. Though the narrative moves from Pindar to Annetta to Maryam in a frustratingly helter-skelter fashion, Hickman provides a convincing portrait of a troubled Venice that will tide readers over until the story elements click into place just in time for a series of satisfying resolutions. (Aug.)