Every day is Halloween for married ghost-hunters Dex and Perry Foray. But this year, that thin veil between the living and the dead is more vulnerable than normal, and when they're given the opportunity of a lifetime to contact the dead wife of a desperate man, they end up creating something they can't undo. Told from Dex's POV, and featuring characters from the Experiment in Terror Series, Veiled and The Devil's Duology.*Ghosted is an EIT novella, #9.5, and should be read after Dust to Dust and Veiled.
From not dead yet.
The only thing I could find was disappointed with, too short a plot. Like other books went more diverse directions.