Best of the series. I wasn't convinced a relationship between Sean (Captain of the station) and Eve (a paramedic) was going to work, but this actually ended up being the most realistic relationship in the series. First of all they've known each other for several years - since before Sean's wife and children died. I was disappointed that turns out his marriage was on the rocks before she died - but it made sense in the course of the suspense plot. I loved the flashbacks to when he was a young man in the Marines and his friendship gone bad. As in the first book, the villain has a relationship with the hero which makes it so much creepier. 
 (view spoiler)[Since Sean was complaining that Blair didn't like sex and was all prissy, it's unrealistic to expect that she was having a hot affair with the creepy guy who is not described as handsome or even very clean. I dislike the typical plot point where the dead wife/husband turns out to be awful anyway. But with cute, kinky, lusty Sean at home why is the supposedly frigid wife having an affair with anyone? (hide spoiler)] 
 The obligatory-for-JD anal sex scene was at least indoors this time, and a bit toned back from previous books thankfully. 
 Ranking the entire series, I liked the first and last the best. The middle books were all kinda the same and the couples didn't really work for me. It is best to read at least #4 before this one, because you get much of the start up to Sean's alcoholism in book #4.