Looking at this module after running it in season 5, this module has 2 distinctive elements to it that seem to stand out for me.
First the mystery element that encompases the first part of the module is fun though I have not had a group that has run it come to the proper conclusion without quite a biit of handholding. Sometimes they outright insulted those running the town and nearly where imprissoned and forgotten. (That could have been awekward). If you run this module, expect to provide some more obvious clues to speed things up a bit.
The second part is the combat in the underground cave system. This part was really fun as the environment came into effect a lot more. Pushing people off cliffs, Narrow cooridors causing line of sight issues and genuinly strong enemies. Compared to later seasons, the enemies here are quite tanky which takes parties by surprise as well as the ability to heal up unconscious enemies to bring them back in the fight had players going for a double tap.
As a stand alone mod, some of the weight of the final enemy was lost on the party which is a shame but those who played through season one would absolutley love it. If you have a group that loves detective work, this would be 5/5 for everyone else, 4/5 Great work overall.
[4 of 5 Stars!]