Actors Henry Caville, Bryce Dallas Howard and Sam Rockwell from English filmmaker Matthew Vaughn’s upcoming spy action thriller, “Argylle,” began a promotional tour in Seoul, Thursday. Director Vaughn, well-known here for his “Kingsman” spy franchise, was absent due to health reasons. “Argylle” follows Elly Conway (Howard), a reclusive author who writes best-selling espionage.