Ooooooh, this was far and away the best Irene Kelly book yet! Also, it's the first one I've read this year that was not a reread, so that added some extra zing, I suppose. Though, to be honest, I haven't remembered loads about the first three either, since it had been so long since I'd read them the first time.
I especially loved the parts that took place in an abandoned hotel called the Angelus. First, I am fascinated by abandoned buildings, and second, it sounded like a place they would use as a setting for some random ep of Angel (1999-2004). I loved imagining wandering around in it.
Also, I love that Irene and Frank are a happily married couple. They are both such strong-minded, stubborn, loyal, wonderful characters who insist on standing by each other through anything, but who also don't always get along at every minute of the day.