Marnie is portrayed as a normal, easy going mother, but the more the plot unravels, the darker her past appears to be. People that have encountered Marnie previously tell a different story that depicts a person who is hell bent on revenge. Yet Marnie has no recollection of anything these people accuse of her. The plot will keep the reader guessing as to whether Marnie is actually consciously taking revenge on these people, whether she has an alter ego or if there is someone looking out for her. 'Watching You' does make you wonder if there is someone that is following you, righting any wrongs they perceive have been done, without the knowledge of the person they are watching.
'Watching You' is written from an interesting perspective that will not only be enjoyed by the reader, but also make them think about what happens when people move on in their lives to those that are left behind. As with all Robotham's books, it is well written, despite this one being written in the present tense (which I usually struggle to enjoy). I was hooked from page one and was kept interested right until the last. The characters worked well together and all felt plausible.