The Dissociative Identity Disorder of Kelly Ishida

When Kelly Ishida dies so early, I had up to that point very much felt like she was the heart of the team from John's point of view. And now that she was gone, all bets were off. With every book in the series have tried to focus on a different aspect of mental illness. But that aspect of memory and especially with Elijah who does not have a memory of his own and essentially has to steal memories from other people, this became a book about Alzheimer's.