Doodledog
I am quite shocked that it was AT. Yes, it’s the mark of a good actor. Toni Collette is good at being unrecognisable in a lot of roles, too.
I’m trying to find the miniseries he was in when he looked the same as he does in this one, but I can’t. He was a teacher, I think, who was having an affair, and they ended up in a remote cottage in Ireland. I clearly didn’t pay much attention as I don’t remember more than that, though!
I didn’t watch Poldark, but had quite a crush on him in Leonardo.
I think you are thinking of ‘The Deceived’, but it wasn’t Aidan Turner in the main role.
It was Emmet J Scanlan, (or similar name), with black beard and hair. He was a teacher having an affair with a student, and I think he had killed his wife, an author, and he was jealous of her writing.They went to Ireland, and the gardener was the young man out of ‘Normal People’.
It turned out to be a bit of a damp squib as I recall,