In the business of secret-keeping, the world’s most adept may include the entire cast and crew of Game of Thrones. The show’s twists and turns are so classified that even former U.S. President Barack Obama wasn’t permitted to know the truth about Jon Snow’s death. In an interview with Variety, Kit Harington, the actor behind the iconic Lord Commander, explained the pressure he felt when his character was killed off in the show’s fifth season.