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"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.
18 Cast Members
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
Park Hyoung-soo
Investigator 1
Nam Yeon-woo
Investigator 2
Lee Kyoo-hyung
Suk-go (Teen)
Dong Bang-woo
Innkeeper
Song Young-chang
Lie detector investigator
Choi Young-woo
Forensic team member #1
