What are you doing here?’ he asks. Calm, reasonable. Nothing to hide. Not afraid. Or not yet. ‘And why—’ / Then he sees what his intruder holds. / Now. Now the fear comes.
-- Narrator (“Prologue: Ben”)

Importance: The Prologue gives the reader an idea about what has happened to Ben. Very few specific clues are given, but the idea that Ben was afraid of the person who came into the apartment and that he was hurt is clear.

Perfect. As ever. As expected. But I feel dirty. Sullied by what I have had to do this evening.
-- Narrator (“Sophie”)

Importance: Foley suggests that Sophie has had to do something that made her feel dirty and guilty. The reader is left to wonder if she is the one who hurt Ben.

Stupid girl. It would have been far, far better if she’d turned and left this place and never returned. But it’s too late now. So be it...
-- Narrator (“Concierge”)