
Every detective has a case that's never left them. Clue by clue, officers remember cases that shaped their career and revealed what it takes to be a criminal - and a detective.
Browse episodes by season for this series.

2025-03-04
Aired 2025-03-04
The discovery of a man beaten to death in his bedroom initially suggests a botched burglary, but detectives uncover a chilling truth.

2025-03-11
Aired 2025-03-11
In 1981, Jennifer Cardy's abduction and murder shook the small community of Ballinderry, County Antrim. Decades later, a fresh look at the case points to a chilling connection.

2025-03-18
Aired 2025-03-18
A woman’s brutal murder, the bizarre TV appearance of her husband, and the taunting of detectives are only some of the twists and turns of this intriguing murder investigation.

2025-03-25
Aired 2025-03-25
When a promising young boxer is murdered, police must juggle the challenges of keeping the peace process on track while racing against the clock to solve the murder.

2025-04-01
Aired 2025-04-01
When a British supermarket executive is kidnapped from near his home by the IRA, Irish police and armed services launch a joint operation with fatal consequences.

2025-04-08
Aired 2025-04-08
During Queen Elizabeth II’s historic visit to Ireland, Irish police race to foil a plot to bomb the royal party, while also battling violent protesters on the streets.
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