This book explores the effects of an EMP bomb. This type of detonation would not kill, but would immediately send us back to life without modern amenities. This book had a little taste of McCarthy's The Road without the total isolation experienced by the main characters. A very interesting aspect of this book was the main character's fierce protection of his diabetic daughter. It truly does lead the reader to question how far you would go to protect your loved ones at the expense of your own morality. A very good read despite, what I considered to be, a bit of a disappointing ending.