S01:E03 - Episode 3
S01:É01 - S01:E01 - Episode 1
Five students transfer to a girls' high school and are bewildered with accidents happening nonstop.
S01:É02 - S01:E02 - Episode 2
The members become prime suspects of a pizza theft and might be kicked out. Who is the real culprit?
S01:É03 - S01:E03 - Episode 3
The members take a sweet break. Then, a stranger hysterically presses on the door lock.
S01:É04 - S01:E04 - Episode 4
The first case request arrives at the Mystery Club. "I hear scary noises in the cafeteria everyday!"
S01:É05 - S01:E05 - Episode 5
The team finds a secret box at the library and discovers the school's ugly past.
S01:É06 - S01:E06 - Episode 6
The team hears creepy sounds like the note said. Is it a soul of a child who died at the school?
S01:É07 - S01:E07 - Episode 7
A mysterious suicide note is found in a dead friend's locker. "I don't think she committed suicide."
S01:É08 - S01:E08 - Episode 8
The team looks for a green pill after a weird phone call but gets in a fight and might split up.
S01:É09 - S01:E09 - Episode 9
The members fight with a former Mystery Club member. A new post is uploaded on In-hye's Instagram.
S01:É10 - S01:E10 - Episode 10
Members dig into In-hye's death. Then, an eerie signal arrives. "Murder... End.. Plan..."
S01:É11 - S01:E11 - Episode 11
Goh In-hye is alive! While following her traces, the members get in a breathtaking chase.
S01:É12 - S01:E12 - Episode 12
The school's conspiracy rises to the surface and the truth of Goh In-hye's death begins to unravel.
S01:É13 - S01:E13 - Episode 13
The last day of school begins. The secret of Mr. Dokgo is revealed, but he has already vanished.
S01:É14 - S01:E14 - Episode 14
Someone attacks the members in the bunker. The iron door is tightly closed. Can they safely escape?
S01:É15 - S01:E15 - Episode 15
Members fall inside a huge maze with no beginning or ending while trying to save Goh In-hye.
S01:É16 - S01:E16 - Episode 16
Everyone has fallen asleep. The members have only one hour left to stop the brutality.
