Adrian Dunbar

AC-12 interrogates Fairbanks about possible sexual abuse at Sands View, but a procedural glitch may interfere with the investigation.

Arnott digs deeper into Danny's past to try to make sense of his actions. Meanwhile, Kate continues her undercover investigation into Danny's unit.

As the evidence mounts against them, Danny's squad members close ranks. Then DS Arnott makes a shocking discovery that could change the focus of AC-12's inquiries.

Corbett's most audacious plan yet requires McQueen to exploit links with corrupt police officers. AC-12's shocking discovery about one of their own reveals the scale of the corruption, including the enigmatic figure known only as "H."

Carmichael's dogged interrogation of Hastings presents mounting evidence of suspicious behavior. Caught in the crossfire, Kate and Steve are torn between loyalty to Hastings and their duty to uncover the truth, however painful. Will the identity of "H" be revealed at last?

Kate and Steve investigate Corbett's past and uncover evidence that may explain Hastings's increasingly reckless behavior. Meanwhile, the hunt for "H" intensifies.

The truth of Mary's death finally comes out, with lasting consequences for the Hogan family. But will it be the answer Cat wants?

Tensions run high among the Hogan family on the day of the funeral, exacerbated by the surprise arrival of Jim's sleazy cousin Frank. Cat worries about Barry, who hasn't been returning her calls.

Cat confides her suspicions about her father to Garda Dez, while Jim presents a promise ring to his girlfriend. Cat visits her childhood friend Barry to have some fun, but she ends up sharing a dark secret from her past.

Jim returns home after a year away, determined to reconnect with his family. Fiona's husband, Paul, helps him get a job at the farm, but when they witness some criminal activity at work, Jim's path to redemption hits a roadblock. Then, one night, Fiona has a car accident that will change everything for her family.