(a) If any person named in and properly served with summons shall without reasonable cause fail to appear or, when directed in the summons, to bring the child before the court, then the court may issue a rule nisi against such person, directing the person to appear before the court to show cause why such person should not be held in contempt of court.

(b) If the summons cannot be served or if the person to whom the summons is directed fails to obey it, the court may issue an order to take the child into protective custody.