What is "naoko"

Naoko is a novel by Keigo Higashino. The original title is . 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.

is a common feminine Japanese given name which is occasionally spelled .