“Bad Blood” is the second novel by the famous Swedish master of the detective genre Arne Dahl about the investigations of “Group A”. This time the action takes place in two countries - Sweden and America, where an elusive serial killer has been operating for many years. An American investigator once put forward a bold hypothesis that these murders were a trace of the Vietnam War, for which he immediately paid with his career. Now “Group A” comes into play, but big politics has its own rules and its own morals. Readers of Reader's Digest magazine named Arne Dahl the best author of action-packed detective stories.