Had to give this 5 stars because it is so chillingly ordinary. A young couple move into their flat…it’s paradise. Until the neighbours start a campaign of terror. This was a “couldn’t put down” book for me. Gripped me from the start as the story seems so potentially real, the events could happen & chills you as you start to wonder how you would react in the same situation. The characters are like real people, no 2 headed monsters here! Some have criticized the ending for no spectacular twist…but to me that just made it even more terrifying!