On a quiet spring day in the suburbs, a stray dog found the corpse of a baby. Three days after his death, the blood group of the victim was determined. Detectives Hayashi, Kaneko, Nagata and Yamagata begin their investigation, suspecting the parents of the murdered child. They use a towel, baby diapers and bruises on the baby's body as clues in the investigation. Who killed the baby?
as Detective Nagata
as Detective Kaneko
as Detective Yamagata
as First Investigation Section Chief
as Chief Investigator
as Doctor
as Madam next to Hikariso
as Yasuko's Mother-in-Law
as Yasuko's Father
as Matsue
as Detective Hayashi
as Forensic Technician
as Folk Song Sisters
