Twenty five years ago Bree Taggert's parents were killed on the same night. Her mother was murdered by her father who then shot himself. Bree is now a homicide detective in Philadelphia.
She receives a message from her sister who needs help. Unable to raise her on the phone, Bree heads back to her home town to check on Erin. She arrives too later, Erin has been murdered. Her estranged husband Justin seems to be the most likely suspect and he is missing.
Bree teams up with Justin's best friend, ex-detective Matt Flynn, to undertake their own investigation and to share information. Bree wants to know who shot her sister and why, and Matt wants to prove that Justin is not a murderer.