Borderline Irish Thriller Unites Northern Ireland Detectives Over Border Murder

Borderline is a six-part Irish crime drama streaming for free on ITVX in the UK, focusing on the uneasy partnership between two detectives from Northern Ireland and the Republic of Ireland, Philip Boyd and Aoife Regan, as they investigate a murder found on the border between the two countries. The series highlights the detectives' contrasting personalities and backgrounds, with Boyd portrayed as a suited Northern police officer haunted by a traumatic past, while Regan is a spiky Garda officer with a complicated personal life, adding depth to the narrative. The show, written by John Forte and directed by Robert Quinn, was first released in 2024 on MGM+ and Roku and has been praised for its unexpected twists, strong pacing, and unique storylines. It has received positive reception from viewers, with an IMDb rating of 6.8 out of 10, and has been compared favorably to other police dramas like BBC's Blue Lights. The murder investigation centers on a young woman found deceased on a beach near the border, with early suspicions that she may have been killed in the Republic and her body drifted across the boundary, complicating jurisdictional cooperation. The series casts Eoin Macken as Philip Boyd and Amy De Bhrún as Aoife Regan, supported by a strong ensemble including Lochlann O’Mearain and Hugh O’Connor.