Demons are a Ghoul's Best Friend: 10/22/13
Demons are a Ghoul's Best Friend by Victoria Laurie is the second in the Ghost Hunter Mystery series. M.J., Gilley and Dr. Sable are hired to check out the hauntings of the Northelm boarding school. There's a demon bully by the name of Hatchet Jack who is terrorizing a wing under renovation.
This sort of institutional haunting story is my kind of mystery. I've read quite a few of the and was able to draw from previous books to figure out the plot before M.J. or her boys did.
By the second book in I'm still not convinced of the friendship between M.J. and Gilley, nor of her chemistry with Dr. Sable. Gilley's flamoyancy and Sable's goofy English mistakes despite his education both distract and detract from an otherwise decently constructed ghost story.