Plot hole: During the scene when Miles is in the hotel room asleep while Jack is out with Stephanie, Christine calls Jack on his cell phone and then on the hotel phone. First disturbed and awakened by Jack's cell phone ringing, Miles gets up to check it to see who is calling. He sees that it is Christine calling, and then lays back down. The cell phone shows Christine calling and then IMMEDIATELY afterward, it says that there is a voicemail waiting. That certainly was an extremely short amount of time in which to leave a voicemail.