Despite the mediocre reviews, I picked up this pdf mostly because it was free and it seemed like a nice short adventure. As I read through it, though, I realized that it is an excellent starting-off point for a new campaign.

With a decent amount of roleplaying and backstory, this mini-adventure can take up a full gaming session and can lead to further adventures.

I particularly like how the author scales it for three different party levels, as well as includes NPC information at three levels (common knowledge, personal, and secret info).