I've said before I think Gustainis goes overboard with the sex and that was certainly my impression this time. I'm not opposed to sex in novels but there was enough here that it was just repetitive. It was not graphic however.
The story was interesting. It involved competing factions in Hell and exorcisms, among other things.
Plot wise I had an issue though. So the demon can heal itself easily but not of a coma? I'm not convinced that makes sense.