The Elegant Empire S01 E76 Episode 76

Gi Yun discovers that someone is aware of the home CCTV and has tampered with its configurations. This leads him to suspect that either Hee Jae or Jaclyn might be involved in the covert activity. In response, he instructs Sung Gu to thoroughly inspect the entire house for signs of monitoring, and he eventually stumbles upon an unusual device. Gi Yun's distrust of Hee Jae intensifies.