Emma Bannon, forensic sorceress in the service of the Empire, has a mission: to protect Archibald Clare, a failed, unregistered mentath. His skills of deduction are legendary, and her own sorcery is not inconsiderable. It doesn't help much that they barely tolerate each other, or that Bannon's Shield, Mikal, might just be a traitor himself. Or that the conspiracy killing registered mentaths and sorcerers alike will just as likely kill "them" as seduce them into treachery toward their Queen.
In an alternate London where illogical magic has turned the Industrial Revolution on its head,...

The enthralling conclusion to the Bannon and Clare trilogy from "New York Times" bestselling author, Lilith Saintcrow. "
""Sorcery. Treason. Madness. And, of course, murder most foul..."
A shattering accident places Archibald Clare, mentath in the service of Britannia, in the care of Emma Bannon, sorceress Prime. Clare needs a measure of calm to repair his faculties of Logic and Reason. Without them, he is not his best. At all.
Unfortunately, calm and rest will not be found. There is a killer hiding in the sorcerous steam-hells of Londinium, murdering poor women of a certain...