Season 1
Twelve years after his death, a high school senior makes a shocking return to the lives of his broken family and friends.
Episodes
1 The Return Jul 19, 2017 
2 The Accident Jul 19, 2017 
3 How Is He Alive? Jul 20, 2017 
4 Endless Confusion Jul 20, 2017 
5 Figuring Out the Present Jul 26, 2017 
6 Putting the Pieces Back Together Jul 26, 2017 
7 In His Place Jul 27, 2017 
8 The Meaning of Family Jul 27, 2017 
9 You Are Not My Brother Aug 2, 2017 
10 Living Your Dream Aug 2, 2017 
11 Who Killed Hae Sung? Aug 3, 2017 
12 The Fireworks Aug 3, 2017 
13 Taking a Hint Aug 9, 2017 
14 The Meaning of Family Aug 9, 2017 
15 Hae Sung's Chest Pain Continues Aug 10, 2017 
16 The New Job Aug 10, 2017 
17 The Guilt Aug 16, 2017 
18 The Culprit in the Room Aug 16, 2017 
19 Why Did You Kill Me? Aug 17, 2017 
20 You Don't Have Evidence Aug 17, 2017 
21 A Big Shock Aug 23, 2017 
22 Disappearance Aug 23, 2017 
23 Cha Pasta Food Truck Aug 24, 2017 
24 Report on the Murder Case Aug 24, 2017 
25 A New Witness Aug 30, 2017 
26 It's More Complicated Aug 30, 2017 
27 The Mysterious Ties Aug 31, 2017 
28 The Truth Aug 31, 2017 
29 The Business Trip Sep 6, 2017 
30 Don't Marry Her Sep 6, 2017 
31 Let's Break Up Sep 7, 2017 
32 The Truth Sep 7, 2017 
33 The New Hopes Sep 13, 2017 
34 Is Tae Hoon the Real Culprit? Sep 13, 2017 
35 Coping with the Reality Sep 14, 2017 
36 Narrowing Down the Suspect Sep 14, 2017 
37 There's No Match for Her Sep 20, 2017 
38 Catching the Real Culprit Sep 20, 2017 
39 Clearing Hae Sung's Name Sep 21, 2017 
40 Life Without You Sep 21, 2017