A4, In the Dungeons of the Slave Lords. I ran this WAY back in the day, and it's probably the best experience I ever had running a published module. We used the pre-gen characters in the back. For those who don't know the players start off as captives, wearing loincloths and with no weapons or gear.
I still vividly recall the players fighting their way through the underground caverns, revelling when they found a rusty dagger or bone-tipped spear, and finally emerging to find the town in flames, lacedons attacking the townsfolks, and the Slave Lords making their escape in the chaos. I remember the grins on the players' faces as they found their cache of stolen weapons in the ship's hold. And then the final battle on the docks and the escape from the burning village. There was a palpable hatred for the Slave Lords amongst my players and revenge was never sweeter.