In what ways are Viv and Carly’s timelines as night clerks at the Sun Down different? In what ways are the timelines the same?

Viv’s timeline uses a third-person perspective while Carly’s timeline uses a first-person perspective. How does this choice build the mystery and suspense of the novel?

Viv finds out from Carly at the end of the novel that her sister, Debby, has passed away from cancer. In what ways do you think this unfortunate news affects Viv’s decision to confess at the police station?