I've seen this one before, but I'm not usually a big fan of mysteries. However inspired by the recent release of the source code for many of Christiansen's games, I tried this one out.
Overall I enjoyed this one quite a bit. It did guide you pretty well so the only thing you really had to be sure of is to keep reading the descriptions closely and examining everything. If you do that, you'll have no problem progressing.
I really enjoyed the logical as the PC worked through the solution himself was quite pleasing. Also the humor, while subtle, was fun as the PC tried to play it off that he knew this stuff all along.
The parser was very forgiving and there were some nice touches to simplify what could have been some tedious typing. The tutorial was a nice touch as it guided you through some of these niceties. Also the hint system, while I didn't need it really, was available and gently guided you to the next thing to do.
Overall, I liked this and would love to see more along this line. Not only will I be checking out the rest of the author's games. I might give the mystery genre another go.