A Debt in the Family

A Debt in the Family occurs when Hawke chooses to tell Knight-Commander Cullen that Keran (the templar rescued from Taronhe) cannot be trusted, and has him thrown out of the templars. At the beginning of Act Two, a templar in the gallows courtyard will mention Keran's family's debt if Hawke speaks to her.

To complete the quest, simply go to the docks at night and talk to Senestra the Snake. No dialogue options are available, and defeating the ensuing ambush completes the quest.