Inspector Koo

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. (Source: Netflix)

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. (Source: Netflix)

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

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

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. (Source: Netflix)

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. (Source: Netflix)

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. (Source: Netflix)

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. (Source: Netflix)

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. (Source: Netflix)

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. (Source: Netflix)

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. (Source: Netflix)

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. (Source: Netflix)