Episode #1.6
- Episode aired Sep 19, 2017
- 1h 4m
![Kim Ju-hyuk in Argon (2017)](https://m.media-amazon.com/images/M/MV5BNGExOGRiMGQtYjFmYS00YmU0LWJkYjAtYTBkZjFmZWJkNzcyXkEyXkFqcGdeQXVyMzE4MDkyNTA@._V1_QL75_UY281_CR3,0,190,281_.jpg)
While at children's playroom, Cheol runs into Hye-ri, who reminds him of an anonymous post on the "Argon" site about suspicious deaths of infants.While at children's playroom, Cheol runs into Hye-ri, who reminds him of an anonymous post on the "Argon" site about suspicious deaths of infants.While at children's playroom, Cheol runs into Hye-ri, who reminds him of an anonymous post on the "Argon" site about suspicious deaths of infants.