E1 - Episode 1

Aired: October 30, 2021

In need of a big win at work, Na Je-hui plays on Koo Kyung-yi's strengths and weaknesses to enlist her help on a missing person's case.

E2 - Episode 2

Aired: October 31, 2021

Kyung-yi suspects there's more to this accident than meets the eye. Reuniting with an old classmate, Song Yi-kyung hears about a former teacher's fate.

E3 - Episode 3

Aired: November 06, 2021

A news story about a criminal's light sentence establishes the next target for "K," who sets the scene at a bustling university campus.

E4 - Episode 4

Aired: November 07, 2021

Santa's chase after "K" puts the team on high alert, especially Kyung-yi. A spooked co-conspirator distances himself from the criminal mastermind.

E5 - Episode 5

Aired: November 13, 2021

Jung Jeong-yeon thinks back to a traumatic incident in her niece's past. Following a hunch that "K" might leave the country, Kyung-yi's team sets a trap.

E6 - Episode 6

Aired: November 14, 2021

Kyung-yi sifts through Yi-kyung's playbooks to find out the next target. An outcast's account takes the team to an IT company headed by a public figure.

E7 - Episode 7

Aired: November 20, 2021

In a high-stakes game of cat and mouse, Kyung-yi tries to find and stop the deadly plans Yi-kyung has set in place for Ko Dam's public event.

E8 - Episode 8

Aired: November 21, 2021

Yi-kyung's loss plunges her into a world of reckless darkness. Both Yi-kyung and Kyung-yi seek answers on the inexplicable outcome of the event.

E9 - Episode 9

Aired: December 04, 2021

Yi-kyung joins hands with Yong-suk, replacing a down-in-the-dumps Kyung-yi who falls out of favor with the strong-handed director.

E10 - Episode 10

Aired: December 05, 2021

Kyung-yi inches closer to finding out the truth behind the boat party. Yi-kyung tries to escape the suffocating grasp of Yong-suk's control.

E11 - Episode 11

Aired: December 11, 2021

Yong-suk begs for Kyung-yi's help after a video of the yacht party is leaked. Yi-kyung taps a member of Kyung-yi's team for a covert collaboration.

E12 - Episode 12

Aired: December 12, 2021

Santa is held hostage by Yi-kyung, who reveals his identity to a disbelieving Kyung-yi. Yong-suk's plans blow up in her face.