3.5 stars rounded up to 4
I've been a big fan of this series since book one but this definitely fell short for me. Stark spends a lot of his time running from place to place, worrying about the destruction of earth. While that's a huge thing to worry about, I miss the books where Stark was tearing stuff up all of the time. He does get back to his nature around 80% through the book when he brings back some hellhounds to assist him. The rest of the book goes on the be a bit anti-climatic with how easy some problems were solved.