In the TAG universe everyone is monitored via a device called a dev stick which monitors a person’s every move. When Jonah, an arbitrator, is called to interrogate a prisoner, he discovers a disturbing plot to wipe out two-thirds of all humans, and knows he must stop it. But can he save the majority of the population, when his own life is being de-constructed around him.TAG is set 100 years in the future, with a very detailed and believable universe. Rather than recreating everything from scratch, the author has allowed a natural evolution of technology and behaviour which gives the book a very realistic feel, and as such it is not a ‘strong’ sci-fi, which is great for readers like me who like sci-fi elements rather than full on, hardcore science-fiction. The plot its self is more of a thriller than a sci-fi and has a very Orwellian theme running throughout. Whilst fully formed, the plot takes a while to get going, particularly with the wordy writing style and the author’s focus on the intricate details of the character’s life, and the true suspense does not kick in to near the end of the book. It is however, an enjoyable read and the characterisation is, like the universe, very believable.The book was let down by the addition of some very explicit sex scenes which did not contribute to characterisation nor the plot. I’m not a prude, but do not like to see sex included just for the sake of sex, which I believe is the case in this novel. It is definitely not a book for minors.To conclude, a perfectly formed and well-thought out universe is presented in this novel and provides the backdrop for a believable and entertaining thriller. The book is affected by a slow pace in the first half and the inclusion of unnecessarily explicit sex.