A Year Without Rain

From publisher blurb:

An adventure for starting characters by Bruce Cordell

The killings begin as the drought afflicting the town of Asylum threatens to stretch into another year. Townsfolk, dead and dry as shed snakeskins, their bodies papery and crumbling, turn up night after night. Who or what is killing the good people of Asylum is what the player characters must discover in this adventure. The characters eventually find that it’s something living down in the well—which is the one remaining source of water for miles around.