Nombre original: 악몽선생
Fecha de estreno: 14 de marzo de 2016
Serie
Tiempo promedio: 16 minutos
Géneros: Misterio, Drama
Sinopsis: A homeroom teacher of Yosan Private High School has an accident, and thus a substitute comes to fill in. Han Bong-Gu is a mysterious man, and after strange occurrences the class president Ye-Rim tries to get to the bottom of this mystery.
