Not going to lie I am pretty disappointed with this read. I really only liked the present day portions, which did not take up much of this book. I think the idea of Cas's perspective would have been really good if it was written properly; this was really just the same book copied and pasted with very minimal changes from the first and second books. I think the author could have added more things the reader did not know about Casteel during that time in the series. Honestly, most of it felt like the author was just buying time for the next book that will actually have plot. I think you could read the present day portions in less than an hour and be ready for the next book. My love for the characters and expectation for what's to come is the only reason this rating is not lower.