The assignment can be completed by first finding and rescuing Clarissa from a group of blackguards in Sarn Slums. Clarissa then gives you the task of finding Tolman who was dragged off by Piety's henchmen into the Crematorium nearby, the entrance to Crematorium is also in slums, right next to a waypoint. On level 2 of Crematorium you can find Tolman's body and take his bracelet after fighting off a full team of blackguards and Piety who flees after losing half of her health. Alternatively, you can go to Crematorium first and get the bracelet and then rescue Clarissa who recognizes it immediately. Either way, Clarissa returns to Sarn Encampment and fills the role of accessory trader which isn't available in town before the completion of this quest.