Scientists accidentally open a portal for demons to come to earth. I didn't finish reading this one. The plot is interesting, the writing is good--I don't know why, it just didn't grab me. I'd recommend it to people who like dark humor and irreverent paranormal stories. Connolly is pretty funny and a very talented writer. This particular book didn't float my boat, but I'd be willing to give Connolly another try down the line.