The human race has been wiped out by a virus called 6DM ('Six Days Maximum' - the longest you've got before your body destroys itself).But somehow, in London, one woman is still alive. A woman who has spent her whole life compromising what she wants, hiding how she feels and desperately trying to fit in. A woman who is entirely unprepared to face a future on her own.Now, with only an abandoned golden retriever for company, she must travel through burning cities, avoiding rotting corpses and ravenous rats on a final journey to discover if she really is the last surviving person on earth.And with no one else to live for, who will she become now that she's completely alone?