I bought this book because it's a science fiction novel set in Liverpool - the only one I've heard of. It's great to see all the places I know, read Scouse words and smile at the occasional cameos by celebrities. However, this is Liverpool in the 1960s - a time when the city was still massively damaged by the bombs of WW2, when the Beatles were still an unknown band playing at the Cavern, and when the entire world was fearing nuclear war between the USA and the USSR.
In this story, two groups of people from different futures have come back in time to try and manipulate the Cuban Missile Crisis to go how they want it to - and to do that, they need Laura. The scene where Laura reads a diary which she wrote in one of those alternate futures - a future where something like 90% of the British population died as a result of nuclear war - is incredibly chilling and definitely the high point of the story.
I do have my criticisms. I wasn't massively keen on certain events towards the end of the book, and one or two of the (more minor) characters annoyed me. Overall, though, this was an excellent book which managed to competently address not only the Cold War, but also other issues prevalant in the 1960s, such as prejudice against black people, gays, and unmarried mothers. I think what made it work for me is that it wasn't a heavy read like many books with moral messages tend to be. In some ways it felt like your typical "teenager at high school" type novel, especially at the beginning before the real drama began. It's a gripping read, and recommended - especially if you've ever lived in Liverpool.