Police Officer So-Eun takes part in the investigation and acts as stand-in for a kidnapped child's mother. So-Eun receives a shocking phone call. Meanwhile, Hye-Jin is a mysterious person, w... Read allPolice Officer So-Eun takes part in the investigation and acts as stand-in for a kidnapped child's mother. So-Eun receives a shocking phone call. Meanwhile, Hye-Jin is a mysterious person, who knows a hidden secret behind the cases.Police Officer So-Eun takes part in the investigation and acts as stand-in for a kidnapped child's mother. So-Eun receives a shocking phone call. Meanwhile, Hye-Jin is a mysterious person, who knows a hidden secret behind the cases.