Where the frick is National Treasure 3?

What have Ben, Riley and Abigail been up to since they found all dat gold in Mount Rushmore!?!

I also think its been long enough now that Sean Bean should be getting out of prison soon. Throw him into the mix and maybe the ghost of Ed Harris, now you've got an epic conclusion on your hands!

Whats do you think is on page 47 of the presidents book?