I was actually very excited to see the 'Quick Look' at the third expansion in the lore of Professor Layton. It seems to be the most interesting of the series, having to do with time travel.
 
What's funny is that I actually loathe time travel. But somehow, Layton seems to be making it work so far. I barely reached Chapter 1, so I have a bit more to go before there's more plot involving time. So far the puzzles have been pretty easy. I'm sure they'll get pretty hard eventually, though. As is per usual with Layton.