A nice outdoors adventure. Lots of choices to be made from the PC perspective. That being said, I have never managed to run this in less than 5 hours. The chase sequence with a large party can get bogged down really badly (especially if the party or a single PC tries something outside the box) The final fight is almost a letdown after the big chase. If you have a lot of Zhents playing CN, then the module can take a totally different direction, which may require a lot of DM improvisation. Still, it was fun to run.
[4 of 5 Stars!]