A text message arrives from a dead friend. Since then, mysterious cases take place in a high school, which are intricately tangled with each other. Five mystery club members get together to reveal the truth of the mysterious incident at school.
Status :
Returning Series
Country : KR
Original language : ko
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8.5 /10
8.5 /10
| Seasons
Season 1
9.3
| 2021
Season 2
9.6
| 2021
Season 3
9.7
| 2024
