Shadow of the leviathan

"An eccentric detective and her long-suffering assistant untangle a web of magic, deceit, and murder in a fantasy reimagining of the classic crime novel"-- "In Daretana's grandest mansion, an Imperial officer lies dead -- killed, to all appearances, when a tree erupted from his body. Even here at the Empire's borders, where contagions abound and the blood of the leviathans works strange magical changes, it's a death both terrifying and impossible....