public static void oneKill(Scanner console, AssassinManager manager) {
        System.out.println("Current kill ring:");
        manager.printKillRing();
        System.out.println("Current graveyard:");
        manager.printGraveyard();
        System.out.println();
        System.out.print("next victim? ");
        String name = console.nextLine().trim();
        if (manager.graveyardContains(name))
            System.out.println(name + " is already dead.");
        else if (!manager.killRingContains(name))
            System.out.println("Unknown person.");
        else
            manager.kill(name);
        System.out.println();
    }