Of course I bought it on a 99 cent list at BookBub or Robin Reads (or one of several others) (edited to add: good thing I got it when it was offered; it is $9.99 on Kindle now)
Praised by Publishers Weekly as "slickly paced" and "overflowing with witty banter," The Black Parade (Book One), She Who Fights Monsters (Book Two), and The Holy Dark (Book Three) tell the tale of Seer Jordan Amador, her snarky partner and paramour Michael, and a siege of ghosts and murderous demons out to cause Hell on Earth.
Two years ago, Jordan accidentally shot and killed a Seer: a person who can see, hear, and talk to ghosts with unfinished business. Her crime came with a hefty price, too. She has two years to help a hundred souls cross over to the afterlife or her soul is bound for hell. Tough break. Her "supervisor" in this project is the Archangel Gabriel.
As the story progresses, we meet other Archangels, some demons and a few humans from Jordan's past. Among their adventures: defeating a False Angel, raising and destroying the Leviathan, trying to stop demons from burning down the Garden of Eden.
The author has created a vibrant world full of angels, demons, and human characters with very distinct and engaging personalities. I am really enjoying this series.