Z의秘密
Subtitle: Kim Sŏng-jong changpʻyŏn chʻuri sosŏl
Edition: Chungpʻan.
Publisher: Myŏngjisa
Published: 1981
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 320
Other titles: Z ŭi pimil
Notes: Mystery fiction.