How Aiden Gillen went from a schemer to a rogue

TOWARDS the end of my conversation with Aidan Gillen I mention that I am professionally obliged to pester the actor about Game of Thrones.
I had fretted about this moment. Gillen, after all, has a reputation for not suffering idiots. At our last meeting, during a day promoting RTÉ’s Charlie Haughey biopic (Gillen played the opinion-splitting politician) he had been conspicuously on edge, grumpy even.