Considering only the reader can glean the whole truth of the murders at the end, were you satisfied with how much knowledge Olivia and Vincent are able to gather?
Yes. Poppy surely helped fill in blanks. The author chose to write Poppy’s final thoughts, which revealed more.
It was amazing they were able to piece together so much of the truth despite her father’s diagnosis and the years of lies.
Without the films and the diary they would never have gotten to the place they were. It would have all be subjection. But between Olivia’s various interviews and Vincent’s notes and sometimes lucid memory, I think they pieced it together fairly well. Especially with the help of Lydia.