The Tooth and the Nail (Korean: 석조저택 살인사건; Hanja: 石造住宅 殺人事件; RR: Seokjojeotaek Salinsagun, lit.

"Stone Mansion Murder Case") is a 2017 South Korean suspense thriller film directed by Kim Hwi and Jung Sik.

One day, he met a woman named Jung Ha-yeon, and after saving her from an unpleasant incident, they build up a friendship, which eventually evolved into romance and love.

The Japanese police and Okamoto also repeatedly probed Ha-yeon over the whereabouts of the copper plate, which led to her having to hide it and ran off from these people.

Grief-stricken over the death of Ha-yeon and his unborn child, Seok-jin turns to alcoholism and abandoned his career as a circus magician.

Mdm Sung, who overheard the murder from the phone (as the printer owner had called her prior to Do-jin attacking him), contacted Seok-jin, whom she knew was Ha-yeon's husband.

Angered at the brothel owner's words, Seok-jin nearly killed her but managed to control himself and went back to Do-jin's mansion with the copper plate and a letter, which Sung claimed was the truth about Ha-yeon.

After going back home with Sung's severed head, Do-jin was confronted gunpoint by Seok-jin, who was bent on avenging Ha-yeon's death.

He planted fake evidence to make it look like that Do-jin had killed "Choi Seung-man", fired a few gunshots in the house and left behind his finger.

In the next hearing, Seok-jin, dressed in a formal black suit, showed up as a witness, and he told the court that he was indeed the anonymous caller who contacted the police about the murder.

As a result, Nam Do-jin was found guilty of murder and sentenced to life imprisonment, with no chance of release from prison on parole for good behaviour.