#1 | 05/25/2018Episode 1
Kang Dong Soo meets Yoo Shi Hyun when she mysteriously shows up and saves his life. When he finds a sketch of a ring he recognizes in her notebook, Dong Soo goes looking for Shi Hyun.
#2 | 05/26/2018Shi Hyun convinces Jin Young to tell her story. Will Dong Soo be able to save Ji Soo?
#3 | 06/01/2018Shi Hyun and her team investigate the murder. Do Jin gets his next assignment.
#4 | 06/02/2018Episode 4
The team struggles to locate Dong Soo before he does something drastic.
#5 | 06/08/2018Dong Soo agrees to help find Shi Hyun.
#6 | 06/09/2018Episode 6
Nam Sun Ho puts his plan in motion. Chief Moon agrees to join forces with Dong Soo for this case.
#7 | 06/15/2018Episode 7
Nam Sun Ho's plan does not work out the way he expected. The team has a new case.
#8 | 06/16/2018Episode 8
Dong Soo thinks he has figured out what is going on until Baek Woo Jin tells him that there is much more to it.
#9 | 06/22/2018Episode 9
The team tries to figure out how they are going to find Tae Joon's notebook, but does it hold the answers they are looking for?
#10 | 06/23/2018Episode 10
Tae Joon offers Do Jin an opportunity to meet the man in charge. Shi Hyun has to decide what she is willing to sacrifice for her brother.
#11 | 06/29/2018Episode 11
Dong Soo and Shi Hyun investigate a case from 20 years ago and race to stop Do Jin.
#12 | 06/30/2018Episode 12
Park Moon Ki asks to meet the Elder. Shi Hyun draws the funeral of someone on the team.
#13 | 07/06/2018Episode 13
Dong Soo and Shi Hyun try to find out what Yoon Sung Soo knows. Park Moon Ki demands answers.
#14 | 07/07/2018Episode 14
Dong Soo tells Young Shim his theory. Now they need to find some evidence to back it up.
#15 | 07/13/2018Episode 15
Tae Joon is determined to prevent Tae Wook from contacting the Elder. Park Moon Ki finally gets to meet the Elder.
#16 | 07/14/2018Episode 16
As more facts are exposed, Shi Joon's mission becomes more and more challenging.