I almost didn't read this immediately because it's written in present tense--not my favorite, especially for fiction. But it had an interesting premise, so I tried it. The author maintains the present tense pretty well (although she uses for both the current story and for flashbacks) until about 1/3 in. Then present and past get used often; before I decided to skim, I saw some of what she was trying to do, but it didn't work for me. In addition, the author used "is" in almost every verb construction. "She is feeling" instead of "she feels." This construction is often used sentence after sentence, making the whole sound like a high school student's fan fiction. (There are some terrific fan fiction authors out there who are better than many published writers, too.) Some well-considered active verbs would have been a pleasant addition.
The author is British and uses British words and phrasing for a story in America about Americans. I have to also wonder where she got her ideas about Texas, because they're a bit.... Well, let's say she's unfamiliar with Texas and doesn't seem to like what little she's heard or read. There's also a significant distrust of law enforcement, even though one of the main characters (the series title character is a former police detective). Now that can be a useful tool for certain novels, characters, and plot, but not for Madison, IMO.
Speaking of her, I'm not thrilled with the character; she's not that likeable and seems a little unformed. Sometimes she acts and thinks in ways that are inconsistent with her supposed character. Nate is more likeable, but still a bit problematic for me. Again, part of it is inconsistency (both times, I'm not speaking of the fact that humans can be inconsistent, but of the way the character comes across to the reader). Sometimes Nate acts more like a former cop than Madison does; other times, he's remarkable uninformed for a PI and former inmate.
I finished the book by skimming because I wanted to know what happened to the little girl. There were a number of surprises, but in the end, felt unfulfilling. There were good things, especially some plots moments; hence, the 2-star rating. Overall, however, I found it lacking. Even though I'd like to know what happened with Madison being framed for murder (and the book ends with a cliffhanger on that plot, although the missing girl is resolved), but not enough to wade through more of this author's books.