‘Frightening’ Tale of Senegalese Soldier Wins International Booker Prize “At Night All Blood Is Black,” a novel written by David Diop and translated by Anna Moschovakis, had already received rave reviews. “At Night All Blood Is Black” was written by David Diop and translated from its original French by Anna Moschovakis. Lucy Hughes-Hallett, the chair of the International Booker judging panel, called it “an extraordinary novel.” Credit...From left: Elliott Verdier for The New York Times; Heather Phelps-Lipton June 2, 2021, 1:33 p.m. ET LONDON — “At Night All Blood Is Black,” a short novel about a Senegalese soldier’s descent into madness while fighting for France in World War I, was named on Wednesday as the winner of the International Booker Prize, the prestigious award for fiction translated into English.