Cast
Ji Sung as Jang Jae-kyung, a detective of the Narcotics Team at Anhyeon Police Station
Jeon Mi-do as Oh Yun-jin, a social affairs reporter of the Anhyeon Economic Daily
Kwon Yul as Park Tae-jin, a prosecutor at Ahn Hyun District Office
Kim Kyung-nam as Won Jong-soo, Geumhyeong Group's successor
Yoon Na-moo as Park Jun-seo, the central figure in the incident
Jung Yoo-min as Choi Ji-yeon, Jun-seo's wife
Jung Jae-kwang as Kim Chang-soo, Jae-kyung's teammate
Cha Yup as Oh Chi-hyun, Jong-soo's chief secretary
Jeong Soon-won as Heo Joo-song, CEO of Two Star Holdings, an insurance company
Park Geun-rok as Jung Sang-ui, a researcher at Geumhyeong Pharmaceutical
Connection: Episode 11 Recap
Jae-kyung considers the possibility that his teammate Kim Chang-soo deliberately killed a suspect being transported to destroy evidence. Given the weather that day, Jong-soo had his window open while driving, possibly to quickly escape the car after crashing it into the reservoir.
Gong Jin-wook, a drug dealer, calls the Doctor and admits to killing Ms. Yoon, demanding to continue supplying drugs through him. The Doctor's identity is revealed, and the man using voice modulation in the call with Gong Jin-wook turns out to be Sang-ui, a researcher at Geumhyeong Pharmaceutical and a member of the Inner Circle.
Sang-ui receives a scolding from his friend Tae-jin, a prosecutor at Ahn Hyun District Office, over the phone for discussing Ms. Yoon's death, warning not to mention such matters on calls. It seemingly appears the Doctor might not be Sang-ui, but someone higher-up like Tae-jin or Jong-soo, Geumhyeong Group's successor.
Jae-kyung suspects that Tae-jin, Jun-seo, Sang-ui, and others in Inner Circle are collectively known as "Doctor," selling drugs for illicit gains, possibly involving a large sum accessible with the password only known to Ji-yeon, Jun-seo's wife.
Yun-jin discovers that Jun-seo was having an affair with Tae-jin before his death. Meanwhile, Yun-ho, who is accused of murdering the mill owner, is still on the run, and his wife, desperate to have her husband brought in safely, reveals his hiding place to Jae-kyung. Despite Jae-kyung's prompt response, Yun-ho manages to escape capture by the police narrowly.
The Inner Circle's core members – Jong-soo, Tae-jin, Chi-hyun, and Sang-ui – convene. Tae-jin, unaware of Sang-ui's secret recording, proposes eliminating Yun-ho. Meanwhile, Sang-ui, discreetly recording the entire conversation, sends the audio file to Yun-ho, still on the run, exposing the plot to assassinate him. He also informs him that evidence linking Tae-jin to Jun-seo's murder can be found with Ji-yeon, Jun-seo's widow.
Yun-ho heads to Ji-yeon's home to secure this evidence, willing to confront Tae-jin even if it means harming her. Simultaneously, Jae-kyung tracks Yun-ho's phone to Ji-yeon's house, but Yun-ho has disappeared, leaving her wounded but alive. Jae-kyung and Tae-jin clash fiercely outside Ji-yeon's operating room in the hospital.
A series of flashbacks reveals past events that shaped the present narrative. In high school, Jun-seo's betrayal of Jae-kyung led to Jae-kyung's forced transfer due to the actions of Inner Circle members. Sang-ui, seeking to regain Jun-seo's membership in Inner Circle, proposes that Jun-seo must break up with Yun-jin as a condition for his reinstatement.
The scene shifts to the Audiophile club room, where Jun-seo, fueled by frustration, violently destroys equipment. Yun-jin witnesses Jun-seo's outburst and is confronted by his aggressive behavior. Meanwhile, Sang-ui observes the scene from a distance, a mysterious smile playing on his lips. As Episode 11 draws close, the tension and intrigue remain unresolved, leaving viewers eager for the next installment.
