This article has been written for the purpose of analyzing the attitude and the sense of value of writer Kim Sung-jong towards sexuality shown in his mystery stories： “Death of a Prostitute,” “A River Adrift,” “Murder on Piano” and 11A White Human Being.” In his stories, sexual crimes are constituted by violating the social taboos such as “incest,” “extra-marital sex” and ‘‘pre-marital sex.”
Human sexuality is revealed in his stories as a desire that should never be confined within the system of marriage, and sexuality violating the social taboos is presented so that it arouses the opposite into a feeling of being betrayed and anger, finally making him to rush to commit murder
By the way, the fact that the relationship between those who violate social taboos is represented only as deviant behavior and sexuality is described focussing on physical matters lack of spirituality shows to some extent the limit of a popular story.
This phenomenon is considered not as Kim Sung-jong's own characteristic but as a kind of behavior of males in our society who would understand a sexual connection as a way of confirming the concept of possession of a female body rather than intercourse as love based on the human relation with females； which is related with males' consciousness to inhumanize females as a sexual object rather than to respect their personality. In other words, this phenomenon is related to discriminative sexual identity that the male is the sexual subject and the female is the sexual object.
Such a discriminative sexual identity is revealed repeatedly through the dissymmetry in which a female's body is described as an object in the male's eyes while a male’s body is not objectified.
Though Kim Sung-jong’s stories are dealing with deviations like incest, extra-marital sex and pre-marital sex, there have never been any descriptions of inverted sexual activity in them. Indeed, in his stories, no homosexuality has been described, even incest has happened unconsciously and no trace of oral sex, sado-masochism, voyeurism, exhibitionism, fetishism, masturbation has been found.
Consequently, writer Kim Sung-jong is considered as a sexual conservative. He can be defined as a writer who guides the readers through interest and concern in logic and reasoning for themselves rather than absorbing the readers through excessive descriptions of sexuality though sexuality has been often chosen as material that constitutes a crime, that is, a writer who is thorough in keeping to the conventions of mystery story writing.