Psychopath Diary Season 1 Episode 2 I Am a Predator ( Air Date 2019-11-21 ) Genre Action & Adventure, Comedy, Crime, Mystery category. Overview "After the restroom incident with Mr. Gong, Dong Sik becomes jubilant. His world of being a pushover ends, and he begins to believe that he is indeed a predator. Meanwhile, Seo In Woo, the serial killer, starts to look for his missing diary, and Shim Bo Kyung, a patrol officer, discovers something strange in the violent crimes and attempts to find the homeless man who vanished.".