After a series of mental-health tests and interviews, the court ultimately ruled that they were not guilty of murdering their child, because they couldn’t distinguish the virtual world from reality. The result, a documentary called Love Child, debuts on HBO this week. I spoke with Veatch about Internet addiction, the uniquely tech-driven culture of Korea, and where the couple are now. Then in 2010 I was in Rome, and BBC International was running a story about the Sarang case.