Season 1

01 You're Doomed Episode 122nd January 2016 Profiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime. 02 We Still Have a Chance Episode 223rd January 2016 The statute of limitations is lifted after the suspect's arrest. Hae-young joins Soo-hyun's team for the newly established cold case squad. 03 We Can Prevent the Killings Episode 329th January 2016 Reality changes after Hae-young exchanges information with Jae-han. Hae-young tries to work together with Jae-han in 1989 to prevent the next murder. 04 We Found the Killer Episode 430th January 2016 The ninth victim is Won-kyung, the woman Jae-han loves. A driver turns himself in, but Soo-hyun and Jae-han determine that his son is the real killer. 05 Changing the Past Alters the Present Episode 55th February 2016 Hae-young starts to investigate Jae-han's disappearance. Jae-han's former colleagues get suspicious about seeing Hae-young digging into the past. 06 Catch Him by All Means Episode 66th February 2016 Seeking vengeance for the events that lead to the death of his daughter, Kyung-tae commits a kidnapping after getting out of prison for burglary. 07 We Must Dig Deeper Episode 712th February 2016 Jae-han arrests Se-kyu for the serial burglary case, but the culprit is freed after serving a short sentence; Kyung-tae still commits murder. 08 How Are You Alive? Episode 813th February 2016 Soo-hyun and Hae-young notice a connection between the burglary case and Da-hye, the woman who killed herself twenty years ago. 09 Hongwon-dong Case Episode 919th February 2016 Hae-young learns that Chi-soo and Jae-han met in 1999 during a case in Inju. After serving time for the crime, Hae-young's brother had killed himself. 10 Someone Has to Stop the Bad Guys Episode 1020th February 2016 The bodies discovered in the mountains appear to be more victims of the 1997 serial murder case. Jae-han learns that Soo-hyun became team leader. 11 The One Last Case Episode 1126th February 2016 Hae-young and Soo-hyun arrest Jin-woo after coming to the conclusion that he is the killer. Hae-young asks Jae-han about the Inju rape case. 12 The Case Was Manipulated Episode 1227th February 2016 Hae-young becomes a suspect for the murder of Chi-soo. Jae-han realizes who the principle offender of the attack on Hye-seung is. 13 The Real Assailant Episode 134th March 2016 Soo-hyun and the others mourn after confirming that the remains belong to Jae-han. Hae-young learns that Jae-han used to look after him in the past. 14 Not Now, but Maybe in the Past Episode 145th March 2016 Hae-young realizes the possibility that his brother could have been murdered after learning from Hye-seung that Sun-woo was not guilty. 15 Is It Really You? Episode 1511th March 2016 Hae-young is arrested for the murder of Chi-soo. Soo-hyun hears Jae-han apologizing over the radio for not being able to prevent Sun-woo's death. 16 If You Don't Give Up Episode 1612th March 2016 Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.