The mystery was resolved with new information and not an actual new thought process based on old information, that being said they did apply that process to other factors in the plot (just not the actual mystery).

There were some funny gimmicks and the acting was pretty good, but for a mystery/detective movie you'd expect better. It almost felt like the mystery was a subplot to some of the other things going on. The conclusion was decent but didn't keep me interested, it resolved the plot emotionally but when it came to actually proving the case (and there were ways of doing so) it wasn't ideal.