After years of seeing her sisters suffer at the hands of an abusive prince, Marra—the shy, convent-raised, third-born daughter—has finally realized that no one is coming to their rescue. No one, except for Marra herself. Seeking help from a powerful gravewitch, Marra is offered the tools to kill a prince—if she can complete three impossible tasks. But, as is the way in tales of princes, witches, and daughters, the impossible is only the beginning. On her quest, Marra is joined by the gravewitch, a reluctant fairy godmother, a strapping former knight, and a chicken possessed by a demon. Together, the five of them intend to be the hand that closes around the throat of the prince and frees Marra's family and their kingdom from its tyrannous ruler at last.

In Daretana’s most opulent mansion, a high Imperial officer lies dead—killed, to all appearances, when a tree spontaneously erupted from his body. Even in this canton at the borders of the Empire, where contagions abound and the blood of the Leviathans works strange magical changes, it’s a death at once terrifying and impossible. Called in to investigate this mystery is Ana Dolabra, an investigator whose reputation for brilliance is matched only by her eccentricities. At her side is her new assistant, Dinios Kol. Din is an engraver, magically altered to possess a perfect memory. His job is to observe and report, and act as his superior’s eyes and ears--quite literally, in this case, as among Ana’s quirks are her insistence on wearing a blindfold at all times, and her refusal to step outside the walls of her home. Din is most perplexed by Ana’s ravenous appetite for information and her mind’s frenzied leaps—not to mention her cheerful disregard for propriety and the apparent joy she takes in scandalizing her young counterpart. Yet as the case unfolds and Ana makes one startling deduction after the next, he finds it hard to deny that she is, indeed, the Empire’s greatest detective. As the two close in on a mastermind and uncover a scheme that threatens the safety of the Empire itself, Din realizes he’s barely begun to assemble the puzzle that is Ana Dolabra—and wonders how long he’ll be able to keep his own secrets safe from her piercing intellect. Featuring an unforgettable Holmes-and-Watson style pairing, a gloriously labyrinthine plot, and a haunting and wholly original fantasy world, The Tainted Cup brilliantly reinvents the classic mystery tale.