Pick up the quest, then map travel to Rata Sum. Exit into Riven Earth and go to the place marked by the quest marker (will be near the southern exit to Alcazia Tangle), and speak to Justiciar Naveed. After the quest updates, head towards the new spot marked on the map. As you are nearing this "meeting place", it is suggested you flag any heroes or henchmen in your party to stand a little way back from this spot, so they do not cause the quest to fail by being spotted by Glayvin. When the quest updates again, head to the nearby spot indicated on the map to "hide". After Glayvin's "capture", speak to Naveed to claim your reward. This quest can be done without a single fight with careful dodging of the raptors.