Military action
From the information granted by Tarina following the fight against a number of her 'companions' to whom she owed a great deal of debt. The group was informed of a bath house located within heapside that went by the name 'The Nymphs Tear' that appearently had seen a large number of known members of the clergy of the Dead Three entering into it, but not emerging. The group suspecting a hidden locale in the bathhouse went to investigate. Inside they found a large dungeon carved into the sewage system underneath the bathhouse where the dead three had built a substantial temple to their respective gods.
Once inside the group found those that were being sacrificed to the group, among them a tiefling who went by the name of Carrion Stinarsk. Being strong enough to accompany them, they traversed the dark chambers together arriving at a large chamber were the leader of the group was fighting a bulky man who appeared to oppose them. Aiding him the leader of the cultists were eliminated.