Fealty to the Drow

From publisher blurb:

St. Aurelius was a peaceful, prosperous, and productive coastal town with a reputation for friendliness to travelers. But in the span of days, the atmosphere has changed dramatically. Several days ago, Count Arsens gave a brief statement acknowledging fealty to the drow, and hasn’t been seen since. Strangers are shunned. Where there was once a ribald nightlife, the empty streets at night seem foreboding. Something sinister is afoot, and heroes are needed to sort things out. A Dungeons and Dragons 5th edition adventure for 1-8 4th level characters. Episode 4 in the Drow Conspiracy.