Thanks to the animated man's corpse Nevine is able to obtain a rough drawing that depicts the interior of an older, likely abandoned temple the cultists are using for their ritual.  Additional questioning has the temple a good 2 hours from the city along with a rough drawing of men on guillotines suggesting that's how he and the others were killed.<br/><br/>You have enough information to begin searching for suspicious people, tracking the carriage they use, setting a trap for them, researching old religious structures in the area, or something else along those lines.