Would you recognize a serial killer if you met one?
Talked to one every day? Artist Lia Anderson doesn't, and neither does anyone else who frequents the Mount Airy Dog Park. When Lia's boyfriend, Luthor, dies violently, Detective Peter Dourson is assigned to the case.
Peter penetrates the close-knit group of dog lovers with the help of Viola, the dead man's dog. The more he learns, the more he is convinced that someone is not who they seem.
As the investigation uncovers Luthor's secrets, Lia struggles to make sense of her feelings about Luthor and her growing attraction to Peter.
Meanwhile, a killer hides in plain sight and anyone can become a target.