Twenty-five years ago, a school burned out, people were killed. The diary of Kaitlyn Johnson has been found. But there's no official record of her. 
 This book is made mostly of the diary of Kaitlyn, some police records, some transcripts. 
 It wasn't a scary book but it was intriguing. Quite early, we discover who is Kaitlyn. Well kind of since we aren't really sure what she is. The second soul sharing a body with Carly? Another personality because Carly experienced a shock? 
 Kaitlyn only appears at night while by day she is Carly. Both communicate by messages. But Carly seems more distant and Kaitlyn worries. 
 It is a slow start but easy to read with short chapters. The other material let us doubt of Kaitlyn. The story was interesting but too slow for a while. It makes us wonder, who is really Kaitlyn, are other events real or have a rational explanation? I would say it is an interesting book but it may have been better if it was shorter.