A missing teenage girl lies dead in a parking lot. Two young immigrants are killed in their apartment. Three men are found dead in the street nearby. As the police struggle to establish what's happened, they realise that the deaths may not be as random as they first appear. As the killings continue, homicide detectives Magozzi and Rolseath turn to maverick computer analyst Grace McBride for help, drawing her into an investigation that will threaten her life. And as the evidence mounts, it reveals terrifying intent. Ultimately, it forces the two detectives to make a dreadful choice: down which path does the lesser of two evils lie...