Currently available on 3 streaming services.

Streaming, rent, or buy Psychopath Diary – Season 1:

Currently you are able to watch "Psychopath Diary - Season 1" streaming on Rakuten Viki or for free with ads on Tubi TV, Rakuten Viki, OnDemandKorea.

Cast

Yoon Shi-yoon
Yook Dong Shik
Jung In-sun
Shim Bo Kyung
Park Sung-hoon
Seo In Woo
Lee Han-wi
Yook Jong Chul
Hwang Hyo-eun
Yook Ji Yeon
Lee Min-ji
Oh Mi-Joo
Choi Tae-hwan
Shin Seok-hyeon
Han Soo-hyun
Kim Mu Seok
Oh Chae-eun
[Seo Ji-hoon's secretary]