What has happened? What have I done?
-- Nora (Chapter 1)

Importance: At the very start of the novel, the reader is introduced to both Nora, and the mystery surrounding her. Nora’s inability to remember anything serves as a warning to the reader that Nora will be an unreliable narrator, especially given that she has suffered a head injury. It also means the truth behind the opening sequence of running and throwing herself on the road will be difficult to get to the bottom of.

The bruise is a recoil bruise. At some point in the recent past, I have fired a gun.
-- Nora (Chapter 5)

Importance: As Nora attempts to recall the past in the hospital, she realizes she has cuts and bruises all over her body. One such bruise she realizes is a recoil bruise, meaning she has fired a gun. The reader knows that Flo’s aunt keeps a gun in her vacation home, but...