Chaos reigns in the throne world as a result of the Great Rift’s opening and the absence of light from the Astronomican.
Inquisitor Erasmus Crowl, whose mind and body were left emptied by what he saw in the Hollow Mountain, has disappeared—taking with him the keys to the conspiracy that has captured his obsession. Lucie Spinoza, his interrogator, must decide whether to search for her master or protect her shrinking holdings from the many forces that still strive to destroy them. While their enemies circle nearby, the interrogator Spinoza launches a race against time, searching for the clues she needs.
But since the fate of humanity itself hangs in the balance, she will have to decide what she is willing to do in order to uncover the truth.