The plot: Something of a coming of age story with a twist. Julia is a Californian teenager who goes through all the normal teenage issues of bullying, boys, bickering parents, and friendships gained and lost Yet all this is shadowed by disaster - the world is slowing down. As time shifts, and the days and nights get longer, society slowly fragments and communities divide, in this timeless thriller.

The good bits: The best bit of this book had to be the build up of tension of what was going to happen next. Julia narrates throughout the book and drops clues here and there of what was still to come. Little hints like the last grape she tasted and unaware of the illness that was causing her mother so much pain. As the birds are unable to fly and the mass beaching of whales spoils their beaches there is a sense that this nightmare played out in darkness will never end.

The bat bits: The only thing I wanted more of was how Julia's dreams and hopes for the future were going to change. Realistically, life goes on as normal, however, at some point Julia must have thought about University, a career and whether she would have a family of her own. This will obviously be a great talking point for book groups and discussion but for me, I was hungry for more.

Worth a mention: This is Karen Thompson Walker's debut and has been chosen as part of Waterstone's 11, a collection of debut's worth adding to your 'to read' list.

When should you read it: Great holiday read, but take a few more as you'll get through this one in a days if not hours.