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.
Ryoo Seung-bum
Suk-go
Lee Yo-won
Hwa-sun
Cho Jin-woong
Detective Min-bum
Kim Yoon-sung
Sang-joon
Kim Bo-ra
Yoon-ah
Lee Seok-jun
Nam Tae-woo
Lim Sung-min
Jung-sook
Kwak Min-ho
Chul-min
Kwon Hae-hyo
Team Leader
Nam Moon-chul
Director
Kim Ah-ron
Girl
Kim Joo-ryoung
Madame
