overview : Kim Yo Han is a psychiatrist who gets involved in a serial murder when his car broke down on Christmas Eve during a sudden storm and he is forced to take shelter at a private high school. Seven students and a teacher are also there over the winter break, but they are gradually murdered one by one as they receive letters from a killer who wants revenge for the death of his mother and sister.

First Air Date : Jan 30, 2011

Last Air Date : Mar 20, 2011

Runtime : 1h 9m

Episodes : 8

Seasons : 1

Genre : Mystery,Crime,Drama,

Companies :

Countries : KR

Keywords : high school, serial killer, school, slasher, psychological thriller, christmas, drug