Membership in the Marcello Mafia is open only to Argonath men. A candidate cannot be a relative or have any close links with a lawman, such as a policeman or a judge. There is no strict age limit: boys as young as sixteen have been initiated. A prospective mafioso is carefully tested for obedience, discretion, ruthlessness and skill at spying.He is almost always required to commit murder as his ultimate trial, even if he doesn't plan to be a career assassin. The act of murder is to prove his sincerity (i.e. he is not an undercover policeman) and to bind him into silence (i.e. he cannot break omerta) without facing murder charges himself).