the car is quiet , the kids snoozing in the back , the sun setting over the ocean . after a long moment of silence , it rang again-once . `` then you can do me a favor in return . '' `` the sky 's the limit , '' he whistled quietly . nat , i ca n't help if i do n't know . '' we had taken what it had claimed for itself . we need to get out of here now . '' and `` difficult '' she felt , was not exactly the word she would use . 