During Night at the Library, you will gain access to a NPC called Swift Solutions. Doing these fetch quests will reward you with Tokens of Gratitude, which you can use to seek out new citizens for Evermore. Fitch is one such citizen and it will cost you 10 Tokens to get this sidequest. Once you purchase it, all you have to do is speak with Fitch in Goldpaw (slightly southeast of inn) to complete the quest.