Okay this book was awesome! For middle grade reading, Ellen Oh captured the creepy aspect as well as many books for older audiences. Harper was a great protagonist, and the mystery behind her past incidents and stay at Briarly were nicely paced out in reveals. In fact one incident with a spirit named Dahlia had the hairs on my arm standing on end. I was completely creeped out. I also liked the focus on troubles with family, understanding, and sometimes racism. 

I hope that Spirit Hunters becomes a multi-volume series going forward. I want more from these characters going forward. This is a new favorite, I'll definitely revisit.