Mike questions Ivan about Katya's disappearance; Ivan confesses his crime to Miro.

Mike suspects Miro is involved in a gang war with the Chinese, and suggests to Sabina that they use Ivan to get information on Miro.

After spending the night purging his feelings about Sadie's work on the force, Mike stumbles into the station and tells Sabina and Samuel of Ivan's drunken confession the night before. Meanwhile, Ivan awakens to find Miro and his men in the upstairs washroom with Eva who has been raped and beaten. When Ivan confesses to Miro he sold him out to the cops, Miro threatens to shoot Eva if Ivan doesn't show him where Katya's body is buried so he can destroy the evidence.

Mike Sweeney is face to face with his worst fear - his dark secrets are about to come out while Ray Prager spins violently out of control.

Still consumed by grief, Mike tries to lay blame on Ivan for Audrey's death but the autopsy confirms he was not responsible. As Maddie continues to take the reins with baby Charlie, appointing Ivan as godfather, Sadie is riddled with anxiety over her own pregnancy and her father's inability to comfort the family as they grieve Audrey's passing. Meanwhile, Ivan sets Miro up to take the fall for Katya's death and informs Mike that he found her wedding rings in Miro's car. Frustrated, Mike pushes Ivan to find out where Miro is hiding the drugs he lifted off the Chinese.

Mike Sweeney has been promoted to a new position as Homicide Detective. His family has been split by serial killer Ray Prager, who is in lockdown after killing two women and traumatizing (possibly raped) Mike's daughter, Sadie. Meanwhile, at work, Mike is assigned a case of a possible homicide of a baby and takes it to forensic psychiatrist, Pen Verrity to help him understand how the murder happened.

New revelations into Bonnie's death are made as the investigation continues and both parents become suspects. Mike tries to stay professional while Pen draws him deeper into her web, and begins to behaves erratically and dangerously. Sadie's credibility becomes an issue when she is accused by boys from school, which may hurt her at Ray's trial. Ray Jr. learns what made his father so unstable and gets news from his mother.

Evidence mounts against Ray Prager and Detective Sweeney brings him in for questioning. Before long it's Sweeney who's under suspicion as Prager weaves a net of suspicion around his old rival.

A recent murder hits Mike hard. Sadie has to prove herself to get in with the cool kids. Ray is going crazy since his wife Traci has left him.

Mike Sweeney has moved his family to Durham County after his partner was killed. His new neighbor, Ray Prager, who is his old nemesis from high school. Sadie is trying to fit in at school, while wanting to be like her father and dealing with the illness of her mother. Ray Jr. wants to be something that his father doesn't approve of.