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.
Still consumed by grief, Mike tries to lay blame on Ivan for Audrey’s death but the autopsy confirms he was not responsible.
Both Ivan and Sadie are livid when they see Mike leave Eva’s house after spending the night with her. Holding on by a thread, Mike throws himself into his work and takes Ivan up on his offer to deliver information about Miro to the cops.
Mike believes Miro is running money through Katya’s company and is involved in a gang war with the Chinese. When he informs Eva of Miro’s hand in the McHalphie murders, she divulges that Katya knew about his dealings and threatened to out him.
When Mike learns that Katya is still missing and her credit cards have gone unused for 5 days, he brings Ivan in for questioning.
Mike Sweeney is back on track. His wife Audrey is home and expecting a baby in a few weeks, daughter Sadie is about to graduate from the police academy and is secretly expecting a child of her own with boyfriend Ray.
Things come to a head for everyone in Durham County. Mike tries to convince his daughter that he did not murder Lissie; Pen tries to convince Mike that she did not drown her daughter; Ray tries to convince Pen that he is not a murderer.
With three murder investigations on his plate and his family in turmoil, Mike attempts to keep his head about him. Sadie's investigation into Lissie's death turns up some startling evidence causing her to doubt her own father.
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.
Mike and Tom take a closer look into Bonnie Verrity's death against Roxy's orders. Meanwhile Pen and Jonathan Verrity's fight over custody of Mark comes to a head.
As Mike tries to deal with a tragic mistake with the case of baby Jane Doe, Internal Affairs and a reporter scrutinize his actions.
Newly promoted homicide detective Mike Sweeney struggles to keep his head above water. His family has been torn apart by serial killer Ray Prager, who's now in lock down after murdering two women.
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.
Sadie tries to coax Ray Jr. into retracing his father's alibi. Ray Jr. starts to doubt his father's innocence. The car thief assaults Traci and demeans Ray. Audrey learns about Mike's past with Claire.
The discovery of a fourth body intensifies the search for the killer. Ray deteriorates further trying to get Traci back, but grows closer to Audrey. A person from their past gives Steve new evidence against Ray and they come to blows on the ice.
Mike Sweeney finds it more and more difficult to hide a painful secret. Ray Prager crosses paths with a serial killer and another woman dies.
Series three of the ever-popular Durham County takes us deep inside another murder case for Detective Mike Sweeney (Hugh Dillon - Flashpoint).
More betrayal and terrifying secrets are unleashed when Durham County returns for a second electrifying season.
The first series centres on Detective Mike Sweeney (Hugh Dillon - Flashpoint) and his family as they move from the city to a seemingly idyllic suburb in the hope of making a new start.
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