In his teens, the Belfast actor Anthony Boyle starred in some local ghost tours. “I was paid £50 a week to hide behind a Tesco in the town and come out and say, ‘I’m the ghost of Henry Joy McCracken.’ One time this girl walking past said, ‘Nah you’re not. You’re Anto Boyle.’” With all the attention paid to young Irish actors recently, I feel like not enough has been paid to Boyle. This may be because, although he has been in a run of high-profile US and UK TV series, he has been remarkably adaptable and chameleonlike, usually hidden...