Gosho Aoyama's Collection of Short Stories S01 E05 Planetes in the Night Sky

Meet Baby Conan! Yukiko Kudo is looking for her missing husband. The only clue to find him again is to decipher a mysterious message left for her. Their baby, Shinichi Kudo, one who later becomes the famous high school Detective Conan, will at this age already be offering some important hints for her.