This book started out as maybe a two-star read if I were feeling generous, but as I kept turning the pages, it kept moving up the scale and, by the time I reached the denouement, I was finding it hard to put it down even for a minute or two. My first problem with the book was that its premise is just so unbelievable. It strays from the thriller concept straight into the fantastical world of science fiction. But as I got further and further into the plot, that ceased to bother me. The characters were so interesting that they moved the story along and built suspense until it finally reached the breaking point. That unbelievable premise, briefly, is this: Cassie Maddox, one of the detectives on the Dublin Murder Squad that we met in Into the Woods , has now moved on to Domestic Violence after the debacle of the Woods case. Her beloved but now estranged partner, Rob Ryan, was moved into a desk job. Even before she worked on the Murder Squad, Cassie had worked in the Undercover ...