I read cozy and historical mysteries, a bit of Paranormal/UF, and to mix it up, I read science and gardening books on occasion.
I love this series and I thought this was an excellent addition. I'm hooked on the characters and deeply invested, as a reader, in what happens to them and how things work out. I absolutely love Rafe and Savannah together - their relationship is really well written, IMO.
Plotting in Change of Heart was done really well - a good solid murder mystery with lots of suspects and no clear killer. Cozies can sometimes be predictable, but I didn't find that to be the case here - I was surprised by the events following the discovery of the body in the park and right up until the end I hadn't a clue.
All of this combined to keep my nose in the book (or the e-reader, in this case) until the end. An ending, by the way, that left me smiling; and that's really a plus.