Everyone's got a secret in Rockton--secret pasts, secret identities, secret crimes. And in a town where everyone's running from something, it's not clear who's a victim, who's perpetrator, or when the lines blur, who is both. Take Casey Duncan: she came to Rockton to help her ex-best friend Diana, until she was betrayed and almost killed. But she's also killed a man and almost gotten away with it. Now, after being drawn in to helping the town solve a series of grisly murders, Casey has settled in Rockton as its chief homicide detective, aided by her town sheriff boyfriend, Eric Dalton. When a case tracking a runaway from town leaves Casey and Deputy Sheriff Will Anders stranded in a blizzard, they take shelter in a cave, only to discover a woman imprisoned in a deep well. Nicole Chavez--presumed dead after she went missing last year, is apparently alive--though barely. But Nicole doesn't know her captor's face, she's never seen him. When the bodies of two more women are found in the cave system, it becomes clear that Casey needs to solve this case before another victim goes missing. But how do you find a killer in a place where everyone's got a sordid secret?