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The Best Episodes of Signal

Every episode of Signal ranked from best to worst. Let's dive into the Best Episodes of Signal!


Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.

Genres:CrimeMysterySci-Fi & FantasyDrama
Network:tvN

Top Episode Ratings Summary

The best episode of "Signal" is "How Are You Alive?", rated 8.4/10 from 172 user votes. It was directed by Kim Won-suk and written by N/A. "How Are You Alive?" aired on 2/13/2016 and is rated 0.2 point(s) higher than the second highest rated, "We Found the Killer".

  • How Are You Alive?
    8.4/10 172 votes

    #1 - How Are You Alive?

    Season 1 Episode 8 - Aired 2/13/2016

    Soo-hyun and Hae-young notice a connection between the burglary case and Da-hye, the woman who killed herself twenty years ago.

    Director: Kim Won-suk

    Writer: N/A

  • We Found the Killer
    8.2/10 204 votes

    #2 - We Found the Killer

    Season 1 Episode 4 - Aired 1/30/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • Someone Has to Stop the Bad Guys
    8.1/10 158 votes

    #3 - Someone Has to Stop the Bad Guys

    Season 1 Episode 10 - Aired 2/20/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • The Case Was Manipulated
    8.1/10 155 votes

    #4 - The Case Was Manipulated

    Season 1 Episode 12 - Aired 2/27/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • The Real Assailant
    8.1/10 159 votes

    #5 - The Real Assailant

    Season 1 Episode 13 - Aired 3/4/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • Is It Really You?
    8.1/10 152 votes

    #6 - Is It Really You?

    Season 1 Episode 15 - Aired 3/11/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • We Still Have a Chance
    8.0/10 215 votes

    #7 - We Still Have a Chance

    Season 1 Episode 2 - Aired 1/23/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • We Can Prevent the Killings
    8.0/10 199 votes

    #8 - We Can Prevent the Killings

    Season 1 Episode 3 - Aired 1/29/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • You're Doomed
    7.9/10 259 votes

    #9 - You're Doomed

    Season 1 Episode 1 - Aired 1/22/2016

    Profiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime.

    Director: Kim Won-suk

    Writer: N/A

  • Hongwon Dong Case
    7.9/10 161 votes

    #10 - Hongwon Dong Case

    Season 1 Episode 9 - Aired 2/19/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • Not Now, But Maybe In The Past
    7.9/10 150 votes

    #11 - Not Now, But Maybe In The Past

    Season 1 Episode 14 - Aired 3/5/2016

    Hae-young realizes the possibility that his brother could have been murdered after learning from Hye-seung that Sun-woo was not guilty.

    Director: Kim Won-suk

    Writer: N/A

  • Catch Him by All Means
    7.8/10 170 votes

    #12 - Catch Him by All Means

    Season 1 Episode 6 - Aired 2/6/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • We Must Dig Deeper
    7.6/10 161 votes

    #13 - We Must Dig Deeper

    Season 1 Episode 7 - Aired 2/12/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • The One Last Case
    7.6/10 155 votes

    #14 - The One Last Case

    Season 1 Episode 11 - Aired 2/26/2016

    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.

    Director: Kim Won-suk

    Writer: N/A

  • If You Don't Give Up
    7.5/10 171 votes

    #15 - If You Don't Give Up

    Season 1 Episode 16 - Aired 3/12/2016

    Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.

    Director: Kim Won-suk

    Writer: N/A

  • Changing the Past Alters the Present
    7.4/10 174 votes

    #16 - Changing the Past Alters the Present

    Season 1 Episode 5 - Aired 2/5/2016

    Hae-young starts to investigate Jae-han's disappearance. Jae-han's former colleagues get suspicious about seeing Hae-young digging into the past.

    Director: Kim Won-suk

    Writer: N/A