Brilliant setting, characters and Pace.
As soon as I read the word Budapest, I wanted to read on. I love anything Eastern European, and Prague (just across the river) is one of my favourite places. For me, the descriptions of place set the tone of the book and had me from the get-go. The Budapest and wider Hungarian setting gives the story atmosphere, and that makes it different from other novels. The complex investigation shows the author put a lot of thought into building a grounded world. The writing is clean and accomplished, and I bonded with the characters.
The story introduces some serious subjects, with tense, underground crime and corruption, funded by dirty organisations. For crime fiction set in European locations, and a story with dark themes, this is the series for lovers of a good read.