A peaceful morning is shattered when Washington Metro Police lieutenant Sam Hollandās beloved father succumbs to injuries from an unsolved shooting while on duty four years ago. As the community rallies around Sam and her family, one thing becomes crystal clear: her fatherās death has turned the unsolved case into a homicideāand itās on her to bring her fatherās killer to justice. But the case has been cold for yearsā¦until an anonymous tip thatās too shocking to believe leads Sam down a dark and dangerous path. Her husband, Vice President Nick Cappuano, knows if she canāt solve this case, it will haunt her for the rest of her life. Sheāll need the strength of their bond to pull her out of the darkness before itās too lateābecause as the missing pieces rapidly fall into place, Sam realizes the truth might just break her all the sameā¦and that her fatherās killer isnāt done yet.