This is the final batch release. Due to quality problems with the video from TVING it has been replaced with the video from VIU. Yes the bitrate is lower, but it still looks better. Audio remains from TVING. The subtitles have also been revised. ### Synopsis A mystery adventure series from the mind behind The Genius and The Great Escape, detailing the Mystery Class at the prestigious Saera Girls’ High School as they attempt to uncover the secrets behind suspicious events occurring at their new school. ### Cast - Park Jiyoon - Jang Doyeon - Choi Yena - Jaejae - Bibi