I really enjoyed this. I had not heard of the author but loved discovering a new favourite. I liked the Dublin setting, and the character Cathy Connelly; I enjoyed following her relationship with her colleague and her boxing interest; both themes which ran alongside the main story. I liked the pace and discovering the links between the characters. I was worried I may find the "Dark Web" theme a bit complicated and technical, but this wasn't the case at all. In fact I found it interesting and enlightening. Although I haven't read any of Sam Blake's previous books in the series, this didn't matter. There are references which I presume are from the earlier books but this didn't stop me following the story in any way. I will definitely seek out the earlier books in the series.