The Day of Atonement: Benjamin Weaver, Book 4 by David Liss (Paperback)
Well schooled by his benefactor, bounty hunter Benjamin Weaver, in the use of wits and fists alike, Sebastião returns to Lisbon—in the guise of English businessman Sebastian Foxx—to stalk the ruthless Inquisitor priest Pedro Azinheiro. But in a city ruled by terror and treachery, no enemy can be underestimated, nor any ally trusted. As Foxx is drawn into the struggles of old friends, confronted by new foes, and forced to play a game of deception, he finds himself befriended, betrayed, tempted by desire, and tormented by personal turmoil. And when a twist of fate turns his plans to chaos, he must choose between surrendering to bloodlust or serving the cause of mercy.