Generally I am not so put off by a protagonist that I find the novel intolerable but Sam Ryan is a Boston based police officer who is afraid of her own shadow. I get that she had traumatic experiences in the past but honestly. Her attitude is I'm too scared to do anything about this and no one else is capable so we are all doomed! Pull yourself together and just get on with it - or rethink your career choice. I was too bored to persevere.