Season 1
Police officers investigate dark secrets that link a series of present-day murders with puzzling incidents that took place in a town 28 years ago.
Episodes
1 The Forewarned Murders Nov 30, 2020 
2 The Smiles Dec 1, 2020 
3 The Survivors Dec 7, 2020 
4 The Fire Dec 8, 2020 
5 The Safe Dec 14, 2020 
6 The Mutants Dec 15, 2020 
7 Jung Woo Being Chased Dec 21, 2020 
8 Secret Lab Dec 22, 2020 
9 Kids Adopted Dec 28, 2020 
10 Jung Woo Following Kids Dec 29, 2020 
11 New Warning Jan 4, 2021 
12 The Reunion Jan 5, 2021 
13 The Secret Lab Jan 11, 2021 
14 Jung Woo in Secret Lab Jan 12, 2021 
15 Reunion with Mother Jan 17, 2021 
16 Mother and Son Jan 18, 2021