Gets worse as it goes . . . (Spoilers)
This started out doing a good job of building up the pressure and intrigue. I actually liked the whole historian-gone-action-hero thing that started happening. But the minute they get in the car and start looking for Stalin Jr., it jumps the shark big time. Mini-Josef was laughably rediculous - he was more like Dracula Jr. with the porn mustache and his hair wasn't nearly impressive enough to be Stalinesque.
It almost reeked of having one writer quit halfway and another with a totally different vision take over afterwards.