Captain Choi Young-jin's dedication to her police work makes her one of the best cops around, but that doesn't mean she has stability in either her work, or her family life.

Two years after the Nam Sang-hyuk case, Young-jin is working a lower level job, but a new murder case has her back on the scene.

Young-jin digs to find the truth behind Mi-kyung's murder, even when a false confession has everyone else convinced.

Young-jin is back in Violent Crimes and picks out her new team, who quickly get to work on a sex trafficking case.

The Violent Crimes Divison digs deeper into the Lee Eun-jung murder case, but can't agree on their main suspect.