Brodie MacBride and his private investigative team are feeling the pressure. Seth and Sarah Creegan, serial killers they were responsible for putting behind bars, are using their considerable wealth to manipulate those on the outside, determined to exact brutal revenge.
Brodie and his second-in-command, Cass, are enjoying the new romantic depth to their relationship, which they're forced to keep secret so their enemies won't use it against them. Cass's obsessive ex-boyfriend, in prison for attacking her and attempting to cut off her face, is due for early parole. They fear news of their relationship will send him into another psychotic rage.
Their enemies are gathering in the shadows, weaving a dark web around them and they've no idea from which direction the danger will come next as they struggle to fend off the repeated attacks. In order to survive, Brodie must join forces with some of the most dangerous people in the country. For the first time, he finds that he is unfinished business.