From publisher blurb:
Aqua Nurglis is the fifth and penultimate adventure in the Shadows in the Mist campaign. It can be played as part of that campaign or as a standalone adventure.
A terrifying disease spreads through the streets of Anvilgard. At first it affected only the poor, and the Grand Conclave shook their heads at the toll in lives lost but did little to stop it. Now the sickness has erupted across the city and folk, both high and low, fall gravely ill. The source of the sickness must be found, before there is nothing left in Anvilgard but bloating corpses rotting in the streets…
Aqua Nurglis follows the events of Petrified Wood and Crucible of Life and sees a party of Soulbound heroes race to uncover the source of a vile sickness spreading through Anvilgard. All signs point to the Blackscale Coil, a mysterious Aelven cabal that runs the city, but the return of an old rival leads the heroes to uncover an even greater rot at the very heart of Anvilgard.