This quest is given to the Castaway should he choose to join either The Inquisition or The Order of The Holy Flame. Upon arriving at your room you will find the Inquisitor waiting outside and the man who was supposed to share the room with you, Hemlar, lying dead within. The inquisitor will task the Castaway with finding the murderer, reasoning that, as the Castaway is a new arrival, he is the only one who couldn't have done it. Inquisitor Mendoza will give you this quest. Begin with talking to Master Vitus. He’ll tell you to talk with Caspar and allow trading with him.