Fifteen days after Jan's joining, a messenger comes up to tell him to get home right now. High-tail it back to the Slums and to his house. You'll meet his lost love Lissa, who has returned with their daughter, the little girl is now deathly ill. Talk with his (one of the many) uncle to learn that you need to talk to the Hidden. For most of this quest, Jan stays at his house. Return to Jan and the girl will be healed. The plot continues downstairs (15,500 exp), where Jan asks your opinion on matters, agree to support him and he rejoins the team.