Borderline Episode Rating Graph

When the body of a woman washes up on a beach in Northern Ireland, Detective Boyd is called to investigate. But he's not the only detective with an interest in the case. Detective Regan from across the border in the Republic of Ireland shows up at the crime scene as the victim is believed to have been murdered in the south and drifted north across the international border.

When the body of a woman washes up on a beach in Northern Ireland, Detective Boyd is called to investigate. But he's not the only detective with an interest in the case. Detective Regan from across the border in the Republic of Ireland shows up at the crime scene as the victim is believed to have been murdered in the south and drifted north across the international border.

Regan and Boyd investigate an abandoned fuel tanker on the border. It could be a boobytrap bomb by dissident Republicans. Instead, they find the driver shot dead and two migrants hidden inside, one of whom is also dead. Regan and Boyd begin a manhunt for the people-traffickers responsible, uncovering a tangled web of political influence, family secrets and lies.

Regan and Boyd investigate an abandoned fuel tanker on the border. It could be a boobytrap bomb by dissident Republicans. Instead, they find the driver shot dead and two migrants hidden inside, one of whom is also dead. Regan and Boyd begin a manhunt for the people-traffickers responsible, uncovering a tangled web of political influence, family secrets and lies.

The bloodied body of a hurling star is discovered and Regan and Boyd are tasked with finding the culprit from within the world of Gaelic sports. Sporting rivalries and jealousies are laid bare as a whole community come under suspicion. Digging deeper, our detectives uncover a gambling and prostitution ring connected to the victim.

The bloodied body of a hurling star is discovered and Regan and Boyd are tasked with finding the culprit from within the world of Gaelic sports. Sporting rivalries and jealousies are laid bare as a whole community come under suspicion. Digging deeper, our detectives uncover a gambling and prostitution ring connected to the victim.