Zero Hero — Kassandra Lamb

On the 10th anniversary of 9/11 the media replays the videos of that day's devastation, and a national hero's life begins to unravel. When the first responderâ€"already struggling with delayed PTSD and addictionâ€"is accused of murdering his former drug dealer, psychotherapist Kate Huntington finds herself going above and beyond to help him. As she and her P.I. husband set out to clear him of the charges, they are thrust into a deadly world of drugs, prostitutes and hired killers, and end up questioning who they are and what it means to be brave. (This book is part of a series but is designed to be read and enjoyed as a stand-alone story as well.)