Naoko (novel)

Naoko
AuthorKeigo Higashino
Original titleHimitsu (秘密)
TranslatorKerim Yasar
LanguageJapanese
PublisherVertical (US)
Bungeishunjū Ltd. (JP)
Publication date
September 1998
Publication placeJapan
Published in English
August 1, 2004
Media typePrint (Paperback)
Pages288 (US)
415 (JP)
ISBN1932234071 (US)
ISBN 4163179208 (JP)

Naoko is a novel by Keigo Higashino. The original title is Himitsu (秘密, Secret). The novel won the 52nd Mystery Writers of Japan Award for Best Novel. The story centers on a man whose wife and daughter are in a terrible accident; the wife dies, but when the daughter wakes up, he discovers his wife's mind inside.

It was made into a 1999 Japanese film, Himitsu, directed by Yōjirō Takita. The 2007 film The Secret is based on the Japanese film.