They are the world’s best-kept secret – an underground society whose eternal cause is to protect the world against the dark creatures and evil forces that inhabit the night. Now Sentinels are being targeted, murdered and turned as the fury of an ancient evil is unleashed once more. And when 15-year-old Nicholas Hallow’s parents are killed in a train crash, the teenager is drawn into a desperate struggle against malevolent powers. I’m sure that everyone has had daydreams of living a different life; of waking up one morning and discovering your regular life is changed so dramatically that everything is new and exciting. It’s great to dream but for Nicholas Hallow the dream becomes a nightmare when a family tragedy unlocks a new life that he could never have expected. The Sentinels are the de-facto guardians of humanity. This secret society are the chosen few, just slightly out of step with normal existence. They suffer and fight for us so that we can live on in blissful ignorance. I’ve always liked that idea, the premise that groups like this could exist side by side with the rest of us, hidden in plain sight. Nicholas is an engaging lead, and it…