This has to be one of the best books I’ve read in a very long time. The action spans three hours during an attack on a school by what appear to be domestic terrorists, but that spare description really doesn’t do it justice. I’ve read Rosamund Lupton’s previous books but this one is undoubtedly her best so far. It’s a breath-taking read, she ratchets up the tension with every turn of the page and gets completely into the heads of her protagonists.

What’s so clever is the way she puts us right in the middle of the action in the school itself, into the minds of the teachers and pupils and the incredible acts of bravery and self-sacrifice which take place, and into the minds of the desperate families waiting for news of their children. It’s also an incredibly timely book, touching on themes of radicalisation and refugees, of belonging, and of the ways in which we ignore what’s really going on in people’s lives. From being in the room with a group of teenagers desperately trying to stay brave, to small children playing a terrifying game of hide and seek, while in the outside world, police investigators try to work out what’s going on and whether it’s safe to intervene, this is an extraordinarily gripping book.

I loved it so much that having raced through it a first time, desperate to know what happens next, I’m now reading it again in a more leisurely way – it’s one of those books which bears repeated reading, there’s so much richness and texture to it. Her descriptions are wonderful too, and it was a real heart-pounding, pulse-racing read.

I read this whenever and wherever I could grab a minute, I was so engaged in it. It was like going to the cinema to see a really good film, I couldn’t believe it when I got to the end, because I had been so transported by the story.

Three Hours will be published by Viking (Penguin UK) in 2020. I received a free copy via Netgalley in exchange for an unbiased review.