Now, the Co. Down native is returning to his native Norn Iron to reunite with Allan Cubbitt, the creator of The Fall for a new TV drama for BBC Two.
It's an adaptation of Eugene McCabe's 'Death and Nightingales' (a book that many of us have read via the Leaving Cert English syllabus) and will be split into three parts. Cubbitt will adapt the novel, which is set in Fermanagh in 1885, as well as direct the series.
Other names involved in the series include Matthew Rhys, star of The Americans, and Ann Skelly, who you may have seen as Rachel in TV3's Red Rock. She will take the lead role as Beth Winters, a young woman who decides to run away from her strict landowner stepfather with local man Liam Ward (Dornan).
Dornan said: "I'm thrilled to be reunited with Allan and his brilliant scripts to play such an intriguing character like Liam Ward and to return to Northern Ireland and BBC Two."