Perfect Number
To him the only unsolvable equation was love.
Overview
A brilliant math teacher formulates the perfect cover-up after his neighbor murders her abusive ex-husband.
Cast

Ryoo Seung-bum
Suk-go

Lee Yo-won
Hwa-sun

Kim Yoon-sung
Sang-joon

Kim Bo-ra
Yoon-ah
Kim Ah-ron
Girl

Cho Jin-woong
Detective Min-bum

Lee Seok-jun
Nam Tae-woo

Kwak Min-ho
Chul-min
Lim Sung-Min
Jung-sook

Kwon Hae-hyo
Team Leader

Kim Joo-ryoung
Madame

Choi Young-woo
Forensic team member #1












![Perfect Number (용의자 X) - Official Main Trailer w/ English Subtitles [HD]](https://img.youtube.com/vi/F4k1YgfC_wg/hqdefault.jpg)