Season 1

01 Episode 1 Episode 130th October 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. 02 Episode 2 Episode 231st October 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. 03 Episode 3 Episode 36th November 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. 04 Episode 4 Episode 47th November 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. 05 Episode 5 Episode 513th November 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. 06 Episode 6 Episode 614th November 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. 07 Episode 7 Episode 720th November 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. 08 Episode 8 Episode 821st November 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. 09 Episode 9 Episode 94th December 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. 10 Episode 10 Episode 105th December 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. 11 Episode 11 Episode 1111th December 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. 12 Episode 12 Episode 1212th December 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.