Newly-promoted DCI Sarah Mills is partnered with DCI Bryan Cole to investigate the murder of Phillip Green, whose body has been found at a landfill site. They soon discover that he was unfaithful to his wife, but soon more bodies start piling up, and Mills and Cole are soon tracking a serial killer hell-bent on punishing those who are unfaithful and come face-to-face with a remorseless psychopath.
