This is a story of revenge and survival. It's told in first person, alternating between Nick and Aubree. Flashbacks are also prominent. Basically Detroit is a cesspool ran by an alliance of the worst of the worst in criminals and city officials. Human trafficking, rape and murder happen as freely as crossing the street. The storyline gets quite brutal at times.
Michael Culling is the head of this evil undertaking. What he took from Nick is just unimaginable. It can never make up for what he's been through, but Nick is on a mission to take Culling and his crew down as painfully as possible. Part of his plan includes Culling's wife Aubree. What Nick comes to know is that he and Aubree have more in common than anyone realized.
I recommend this book for someone who likes the whole Dark Knight idea with added very mature content. Nick is reminiscent of the DC character, but he also comes with plenty of extra twists.