Interesting although a tiny bit formulaic police procedural murder mystery in Minneapolis. (I kept expecting a sly reference to Lucas Davenport; no such luck.) I was eerily haunted by terrible old TV show Killer Net which I think from memory had roughly the same plot, and had the same "omg! they're basing the murders on a video game! technology intrudes into Agatha Christie's world!" breathlessness about it (although this has an edge of it and Killer Net was entirely composed of it, like Vesuvius vomiting lava and internet cliche with equal abandon). I worked out who did it, but not why. Have acquired the remaining books in the series.