From publisher blurb:
Death Has Come to Wayham
A deadly fog has fallen on the town of Wayham. People are dying in unprecedented numbers, for reasons nobody can surmise. Is it just poor luck, or is it a curse far more sinister than anything the town has seen before? The search for answers leads to a dungeon beneath the ruins of a forgotten temple of Apollo. There, the heroes will find unusual encounters and traps, as well as monsters never seen before. It is there that they will face THE DEATHSPEAKER!
Lair of the Deathspeaker is a 5th-level adventure for the 5th Edition of the world’s most popular roleplaying game, and is intended for characters levels 3 or 4.