On Feb. 22, 2019, a man calling himself Matthew Chao knocked on the door of the North Korean embassy in Madrid, with a gift for the embassy’s highest-ranking official.
The North Korean worker who answered the door escorted the visitor inside and went to fetch his boss.
The North Korean captives probably thought the vigilantes were paramilitary operatives on a mission to kidnap or kill them.
But “Matthew Chao” was an activist and human-rights campaigner, not an assassin.
His real name was Adrian Hong Chang, and his plan was to fake a kidnapping of North Korean diplomat So Yun-suk, who had asked for his help defecting.