Dawnstar Sanctuary

The Dawnstar Sanctuary is an abandoned Dark Brotherhood Sanctuary no longer in use. Cicero flees to the sanctuary during the quest "The Cure for Madness." At the end, the player has a choice to spare or kill Cicero, although the latter is more dangerous than it looks, for when the player attacks, Cicero drops his wounded facade and fights back with surprising ferocity.

The passphrase is "Innocence, my brother."