第 1 季 共 16 集
播出时间：2016年1月23日
第 1 集 You're Doomed
播出时间：2016年1月23日
Haunted by a classmate's kidnapping 15 years ago, Park Hae Young becomes a police profiler who's lost faith in the police force. This all changes when he stumbles upon an old radio that's receiving transmissions from the past.
第 2 集 We Still Have a Chance
播出时间：2016年1月24日
After the Kim Yoon Jung kidnapping case, the Chief of police creates a cold case squad. Their first case is the infamous Gyeonggi Nambu serial murders.
第 3 集 We Can Prevent the Killings
播出时间：2016年1月30日
During the investigation of the serial murders, Park Hae Young discovers that the radio transmissions are actually connecting him to the past.
第 4 集 We Found the Killer
播出时间：2016年1月31日
The cold case squad figures out who the serial killer is, but not before the wrong suspect turns himself in.
第 5 集 Changing the Past Alters the Present
播出时间：2016年2月6日
Park Hae Young begins asking questions about Lee Jae Han. Meanwhile, the police force in Lee Jan Han's time struggles with a string of larceny cases.
第 6 集 Catch Him by All Means
播出时间：2016年2月7日
Park Hae Young figures out that Oh Kyung Tae's true objective is the father of the girl he kidnaps.
第 7 集 We Must Dig Deeper
播出时间：2016年2月13日
Lee Jae Han catches the real culprit behind the burglaries, unwittingly changing the past for the worse again.
第 8 集 How Are You Alive?
播出时间：2016年2月14日
The cold case squad finds Shin Da Hye, who has been living under the murder victim's identity.
第 9 集 Hongwon Dong Case
播出时间：2016年2月20日
Park Hae Young uncovers another layer to Lee Jae Han's disappearance. An old demon from Cha Soo Hyun's past resurfaces.
第 10 集 Someone Has to Stop the Bad Guys
播出时间：2016年2月21日
The Cold Case Squad is assigned to the serial murder, but the last the victims isn't identified. Cha Soo Hyun revisits a past trauma.
第 11 集 The One Last Case
播出时间：2016年2月27日
The Cold Case Squad catches the Hongwon-dong serial killer, but Lee Jae Han's determination changes the past again.
第 12 集 The Case Was Manipulated
播出时间：2016年2月28日
Park Hae Young becomes the prime suspect for the Section Chief's murder. Meanwhile, Lee Jae Han must find out who this "one" is before it's too late.
第 13 集 The Real Assailant
播出时间：2016年3月5日
The Cold Case Squad secretly reinvestigates the Injoo gang rape case. Lee Jae Han finds out the connection Park Hae Young has to the case.
第 14 集 Not Now, But Maybe In The Past
播出时间：2016年3月6日
Following the trail the Section Chief left, Park Hae Young uncovers the truth behind his brother's death. Meanwhile, Cha Soo Hyun finds Lee Jae Han's radio in Hae Young's possession.
第 15 集 Is It Really You?
播出时间：2016年3月12日
Park Hae Young is framed and arrested for the murder of the Section Chief. Cha Soo Hyun sets out to save Lee Jae Han and to find the one witness who can bring down their enemy.
第 16 集 If You Don't Give Up
播出时间：2016年3月13日
Lee Jae Han is set on bringing down Kim Bum Joo, despite knowing that he's going to die, but a certain transmission is about to make all the difference.
