Since time immemorial, at the eastern edge of the continent the Leviathans have risen from the sea to make their way along the Titan’s Path to the Lake of Khanum. For centuries, though, the Empire has blocked their progress, erecting successive walls across the continent to first contain the Leviathans’ journeys and then prevent them entirely. Now with four sets of walls protecting the Empire’s interior and its citadel above all, most citizens can go about their normal lives even in a wet season, secure in the knowledge that the Legions and the Engineers are keeping them safe. If and when a Leviathan rises, they will kill it with the latest cannons, and incorporate its corpse into the Empire’s defenses.

Dinios Kol, holder of the Imperial rank of Signum and first-person narrator of The Tainted Cup, is not fortunate to live in the Empire’s interior. He has been posted to Daretana, a settlement between the Third Ring Walls and the Sea Walls, the latter being the Empire’s outermost defenses, tested almost every wet season. The world that Robert Jackson Bennett has created is a lush one, in which vines can function as gate guards at a patrician family’s villa, vines trained enough and fast-moving enough to prevent a visitor from entering, unless of course the visitor presents a vial of exactly the right scent. One of the marks of wealth in the villa is the presence of “a massive kirpis mushroom [that] had been built into the corner of every main room—a tall, black fungus built to suck in air, clean it, and exhale it out at a cooler temperature.” (p. 7)
Humans have extensively altered not only plant and animal life, they have changed themselves as well. Din himself is an engraver, a person altered to have perfect memory, to accurately engrave moments into their brains. Like the guard vines, engraver sometimes use olfactory cues to open up memory, to make some moments more readily accessible than others. This alteration suits Din’s current assignment. He is assistant to Ana Dolabra, two Imperial ranks higher at immunis, eccentric if not downright peculiar, and possessed of far-reaching connections, as Din discovers over the course of the case.
For Din has not passed through the villa’s guards to gawk at the lives of the rich and notorious. He is there because someone has died there, in a most spectacular way that not even the immense wealth of the Haza clan can keep hidden.
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