Man of Blood

Piers Ashley has blighted himself forever in the eyes of his autocratic father and snobbish younger brother by his involvement with a criminal gang in London, for which he has recently completed a jail sentence. His mother and his sister cannot believe that he has gone irrevocably wrong, and they are right, for he is secretly an agent of F.9, a police unit so undercover that its members are frequently sentenced alongside members of the gangs they have infiltrated.