 CONT: When everyone reaches the dead end room at the bottom of the  winding staircase, Ben has the tube with the Declaration of  Independence over his shoulder, he slung it there after saving it  from falling into the pit. After they start talking about having  reached a dead end, it disappears from over his shoulder. When Ian  and his henchman turn to go back out, Riley is holding it and when  Ian is talking to Ben from the platform, Abigail has the Delcaration  of Independence and Riley just has the tube.