"To him the only unsolvable equation was love."
A brilliant math teacher formulates the perfect cover-up after his neighbor murders her abusive ex-husband.
Pang Eun-jinDirector
Suk-go
Hwa-sun
Sang-joon
Yoon-ah
Girl
Detective Min-bum
Nam Tae-woo
Chul-min
Jung-sook
Team Leader
Madame
![Perfect Number (용의자 X) - Official Main Trailer w/ English Subtitles [HD]](https://img.youtube.com/vi/F4k1YgfC_wg/hqdefault.jpg)
