Actual rating 1.5 stars.
I read Deadly Obsession as I'd enjoyed two of the books in D.S. Butler's Karen Hart series - and sadly her Mackinnon books are not a series I'll be continuing reading. I was really quite staggered by how flimsy this book is. Mackinnon isn't an interesting or well-defined character. I know absolutely nothing about him apart from where he lives, that he wants to get into major crime and that he is in a relationship with Chloe. That's literally it. I can't help feeling that the author made a mistake by having Mackinnon's colleague Collins be the one to initially refuse to investigate Anya's disappearance, because this means the (scant) emotional motivation in the book is Collins' - he feels guilty and wants to crack the case because of that. Mackinnnon himself has no personal involvement, and is therefore less interesting. He's just sort of there the whole time. I want to invest in a series character, not forget about them. I also would have liked some of the police force to have been female.
The plot lacks depth or twists - I liked the sound of the Star Academy and twisted reality TV, but this is only explored in the most surface manner, and I didn't find any of it very convincing. The writing, too, is flat and pedestrian. There are far too many uninteresting details included- how the characters take train journeys, the roads they go down etc - which prevents it from even being pacy. I always felt with the Karen Hart series that the plots had a decent level of complexity which made up for the flat prose, but unfortunately those flaws are fully exposed here.
There are many, many better police procedural series out there - and better books by this author, too.