Sicario: La Venganza

John Rain, a hard and resourceful man in his 40s with an American mother, a Japanese father, a childhood spent in both countries and a stretch with Special Operations in Vietnam that literally made him what he is today a highly paid freelance assassin. The book begins with Rain arranging the death (on the subway) of a prominent government figure by short-circuiting his pacemaker and making it look like the man died of a heart attack. But Rain's simple life suddenly becomes very complicated when he finds himself involved both romantically and professionally with the dead man's lovely daughter, Midori, a talented jazz pianist.