Grimsby, a junior Auditor in the magical Department of Unorthodox Affairs, finds himself on the other side of the law in this spellbinding urban fantasy.

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Grimshaw Griswald Grimsby may have one case under his belt, but he's still a novice Auditor in Boston's Department of Unorthodox Affairs. And he's already made mistakes.

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Desperate to repair his fraying friendships, he doesn't ask too many questions when a mysterious patron offers him the chance to join a heist of an otherworldly vault--and in the process find answers that could make things right.

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Complications arise when Grimsby learns that his partner, Mayflower, is keeping secrets about his past. Between facing new demons, old horrors, and monsters--both Usual and Unorthodox--Grimsby soon realizes nothing is how it appears and that not asking enough questions just might be his downfall.