The Tyrant - Seth Dickinson (Book 3 in the Masquerade)

After years of service to the corrupt Imperial Republic of Falcrest, Baru Cormorant finally knows how to destroy it. She’s discovered a deadly, weaponized blood plague.

And if she releases it, the epidemic will kill millions . . .

not just in Falcrest, but worldwide. As her divided mind turns on itself, Baru’s enemies close in. She must choose between genocidal retribution and a harder path.

All she has to do is defeat a conspiracy of kings, spies and immortals, manipulate the outcome of two great wars, and steal the greatest riches in the world. If Baru triumphs, she can force Falcrest to abandon its colonies and make right its crimes. But does she want a slim chance at justice — or certain revenge?