I simply don't know what to say about books in this series. While I like them, I actually feel a little uneasy that I do. These people have enough baggage to keep a team of therapists busy for years.
DC Kathleen Doyle can tell if people are lying, an obvious asset for a police detective. Her husband, Lord Acton, also a high-ranking detective, is very intelligent - besides being titled, handsome and rich. However, these people have some serious problems. Acton is obsessed with his wife, Doyle. Before they were married, he stalked her, photographed her, bugged her phone and her computer, and broke into her apartment. This was all hunky-dory with Doyle. They are married now, and he insists on knowing where she is at all times, and that she check in by phone every hour. He tracks her by the GPS on her phone. He has killed for her, and has no qualms about doing it again. (Killing is his solution to most problems, anyway, and he speaks of killing someone as casually as most people order lunch.) Doyle complies and accepts all that as a matter of fact, because, after all, that's just the way he is. One of Acton's murders was done right in front of her, and she never turned a hair, simply and matter of factly helped him cover it up. He also does gun-running on the side, which might be a new story arc but that is not clear as yet. Just your basic, nice people next door, right?
SPOILER ALERT///SPOILER ALERT///SPOILER ALERT///SPOILER ALERT
In this third book, Doyle is working a cold serial killer case while Acton is putting the moves on an attractive reporter, and Doyle has become to suspect he is cheating on her. When he explains his reason (setting up the reporter, who is trying to dig up dirt on him), Doyle goes along with the act, acting the jealous wife, even to the point of offering to let him divorce her so he could marry the reporter. At one point, he tells Doyle he's tired of the reporter and would rather kill her than to keep on with her, but he needs more information first. Doyle tells him that killing is "not a good thing", so instead, after leading the reporter on and letting her think he is divorcing Doyle for her, he brutally breaks it off by phone (in front of Doyle) and then ruins her professional career to boot, just because he can. Doyle's cold case work takes a weird turn, and ends up involving a hit man...who also kills for her! What IS this strange attraction Doyle has for psychos?
This is not one of my more coherent opinions, but it matches how I feel about the series. It rings every alarm bell I have, but Doyle and Acton's story is compelling, and I have to find out what happens next.