After all, you’re a Witcher and a werewolf cannot be left alive he must help you or face death. After a brief back and forth, you’ll give the werewolf one of the two choices below. Geralt will ask the werewolf about the Crone who stole your dead daughter’s medallion. Make your way east until you stumble across a werewolf that is too weak to hunt. If all of the proper decisions have been made, this quest will begin during the nighttime at Crookback Bog.
In order to trigger this quest, you will have had to make a few specific choices throughout your playthrough of The Witcher 3: Wild Hunt:
Quest Location: The Orphanage of Crookbag Bog