The exhilarating action-packed sequel to New York Times bestseller City of Dark Magic takes Sarah Weston to Vienna. In a race against the clock, Sarah must find a cure for her friend Pollina, who is gravely ill. Assisting in her quest, Nicolas Pertusato travels to London in search of an ancient alchemical remedy, only to discover a mysterious foe is one step ahead of him. And back in Prague Prince Max must come to terms with the reappearance of a long dead saint while being pursued by a seductive historian with dark motives of her own. Back in the city of Beethoven, Mozart, and Freud, Sarah becomes embroiled in a deadly web of intrigue that involves a scientist on the run, stolen art, seductive pastries, a few surprises from long-dead alchemists, a distractingly attractive horseman who's more than a little bloodthirsty, and a trail of secrets and lies. But none of that will be more dangerous than the brilliant and vindictive villain who seeks to bend time itself, forcing Sarah to must travel deep into an ancient mystery to save the lives of her loved ones.