Outlander's Graham McTavish confirms he was secretly cast in House of the Dragon

The Hollywood Reporter

McTavish was recently spotted on set of the Game of Thrones prequel. “I’m really having a lot of fun. We’ve just started," he told Sylist.co.uk. "It’s a very big project, so we’re getting to know each other. They’re lovely people. It’s great, but I can’t tell you too much. I can’t tell you really anything about the story! But it involves a lot dragons.”