Nicolas Cage returns as treasure hunter extraordinaire Ben Gates in the blockbusting sequel to 2004's action adventure National Treasure. This time Ben's on the trail of the mythical City of Gold after one of his ancestors is implicated in the assassination of President Lincoln. Yep. Ed Harris is the baddie he battles as he flits from Paris to London to Washington DC. Diane Kruger is now Ben's estranged wife and Dame Helen Mirren queens it as his American linguistics professor mom.