who is the killer Ep 3

1 The winners Ep 1 

2 The beginning Ep 2 

3 who is the killer Ep 3 

4 The unknown Ep 4 

5 Ep 5 the new student 

6 Ep 6 Hanz dead 

7 Ep 7 ( Expose the secret) 

8 Ep 8 ( the past is past) 

9 Ep 9 ( What is going on) 

10 Ep 10 (The dead of two ) 

11 Ep 11 ( the weapon) 

12 Ep 12 ( who is the killer) 

13 Ep 13 ( the killer) 

14 Ep 14 ( necklace) 

15 Ep 15 ( the password) 

16 Ep 16 ( killer) 

17 Ep 17 ( brother) 

18 Ep 18 ( the secret) 

19 19 ( father) 

20 Ep 20 ( dead body has found) 

21 Ep 21 ( mastermind) 

22 Ep 22 ( begin) 

23 Ep 23 ( real name??) 

24 Ep 24 ( Exposed) 

25 Ep.25.( Sister) 

26 Ep 26 ( Flashback) 