Sorcery's Wrath

From publisher blurb:

In the weeks following the events of New Dune Marauders, the city of Rhojess has undergone a traumatic siege. The marauder army under the command of Harrock has taken the north quarter of the city, and Kapetan Luratka desperately attempts to prevent them from claiming more. In the chaos of the siege, the members of the Four Families have disappeared, leaving Luratka and the guard in charge of the city’s defence. However, while patrolling the makeshift barricades along Snake Street, which divides the city, Luratka was wounded by a marauder arrow. Worse, the arrow was poisoned, and the wound slowly festers despite the work of alchemist and healers. Can the adventurers find a cure in time?