i had really high hopes for this book, and for the most part: it fulfilled them.
the entirety of the book kept me really engaged and locked in, aside from a few slow parts.
the aspect of time travel did confuse me a bit, but in an intriguing way that made me more encapsulated.
i would definitely recommend this book for someone wanting to venture out into broader genres, without jumping head in.

my only gripe is how abrupt the ending was. we never got any real answers. did kirby figure out and accept that harper was time traveling? did dan survive? did she get the closure she needed from finding her (would be) killer and killing Him? did she and dan pursue a relationship? how did she move on and heal from the trauma? 
i did appreciate the chapter from bartek and thought it was a really nice addition. a really nice way to finish it off.