Using the internet to 'source' victims is a very topical subject and one that has been used in several books lately. What seems to set 'Troll' apart is that we don't know what has happened to Fortune's daughter - is her disappearance connected to her online activity? This is a very good premise for a story line.
The front cover also grabs your attention straight away: who does the eye belong to? The watcher or the watched?
The front cover also grabs your attention straight away: who does the eye belong to? The watcher or the watched?