I would have to say, this is one of the hardest spot the difference games I have ever played. Usually I am quite quick at finding tiny details that are different but even this one got me. Keep up the challenge.
This comment is for all the idiots who play this game for about a total of 5 minutes and then complain about it. The challenging part does not come in until you reach fellow status. It is a good game with a lot of information that it extremely interesting to me, and should be to others.