Episode 1

S01 E01 • Friday, May 25, 2018 • May 25 • 1h 18m

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.

Shi Hyun convinces Jin Young to tell her story. Will Dong Soo be able to save Ji Soo?

S01 E02 • Saturday, May 26, 2018 • May 26 • 1h 16m

Shi Hyun and her team investigate the murder. Do Jin gets his next assignment.

S01 E03 • Friday, Jun 1, 2018 • Jun 1 • 1h 7m

Episode 4

S01 E04 • Saturday, Jun 2, 2018 • Jun 2 • 1h 11m

The team struggles to locate Dong Soo before he does something drastic.

Dong Soo agrees to help find Shi Hyun.

S01 E05 • Friday, Jun 8, 2018 • Jun 8 • 1h 4m

Episode 6

S01 E06 • Saturday, Jun 9, 2018 • Jun 9 • 1h 4m

Nam Sun Ho puts his plan in motion. Chief Moon agrees to join forces with Dong Soo for this case.

Episode 7

S01 E07 • Friday, Jun 15, 2018 • Jun 15 • 1h 14m

Nam Sun Ho's plan does not work out the way he expected. The team has a new case.

Episode 8

S01 E08 • Saturday, Jun 16, 2018 • Jun 16 • 1h 3m

Dong Soo thinks he has figured out what is going on until Baek Woo Jin tells him that there is much more to it.

Episode 9

S01 E09 • Friday, Jun 22, 2018 • Jun 22 • 1h 3m

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?

Episode 10

S01 E10 • Saturday, Jun 23, 2018 • Jun 23 • 1h 1m

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.

Episode 11

S01 E11 • Friday, Jun 29, 2018 • Jun 29 • 1h 4m

Dong Soo and Shi Hyun investigate a case from 20 years ago and race to stop Do Jin.

Episode 12

S01 E12 • Saturday, Jun 30, 2018 • Jun 30 • 1h 7m

Park Moon Ki asks to meet the Elder. Shi Hyun draws the funeral of someone on the team.

Episode 13

S01 E13 • Friday, Jul 6, 2018 • Jul 6 • 1h 13m

Dong Soo and Shi Hyun try to find out what Yoon Sung Soo knows. Park Moon Ki demands answers.

Episode 14

S01 E14 • Saturday, Jul 7, 2018 • Jul 7 • 1h 8m

Dong Soo tells Young Shim his theory. Now they need to find some evidence to back it up.

Episode 15

S01 E15 • Friday, Jul 13, 2018 • Jul 13 • 1h 4m

Tae Joon is determined to prevent Tae Wook from contacting the Elder. Park Moon Ki finally gets to meet the Elder.

Episode 16

S01 E16 • Saturday, Jul 14, 2018 • Jul 14 • 1h 3m

As more facts are exposed, Shi Joon's mission becomes more and more challenging.