“Unless you have hope and never give up, you can change the future.”
“Signal” Korean drama
Following the open-ended conclusion of “signal,” TVN has officially responded to fan expectations by unveiling the second season of the popular Korean crime thriller drama. “The second signal.” In addition to excitement, original cast members Kim Hae Soo, Jo Jin Eun and Lee Jae Hoon recreate their roles “signal” Season 2. Additionally, other well-known actors will be reportedly featured in upcoming sequels. This is the details!
“Signal” Season 2 – “Second Signal” comes with an original cast

On March 5th, TVN announced a Korean drama “signal” Season 2, title “Second Signal” The original cast members Kim Hae Su, Joe Jin Woon and Lee Jehoun are set to reprise their roles. Additionally, production of the series has begun. The series is scheduled to air in early 2026 as part of TVN’s 20th anniversary.
The serious radio signal rings again!
“Source” Season 2, reunited by wall wall crews and devoted actors!
Kim Hee -so x Cho Jin -Woong X Lee Je -Hoon’s releaseIt will first air in 2026 ㅣtvn#second signal #kim hee -so #ho jinwoong #lee hoon#TVN #Run Together TVN #streaming is twing pic.twitter.com/g12alxp2ci
– TVN Drama (@cjndrama) March 4, 2025
“Signal” Korean drama

TVN aired the first season of “Signal” in 2016. The series, which combines thrilling research and science fiction, attracted a large audience during its run.
The story follows detectives from the present and past who use mystical transceivers to communicate across parallel worlds.
Detectives work together to resolve long-term cases. After solving the first case, they set up special units to re-examine other cold cases. Surprisingly, some of the cases featured are inspired by real events.
According to Nielsen Korea, the final episode achieved an average viewer rating of 13.4%, peaking at 15%. With this feat, “signal” It has become one of the most popular Korean dramas of all time.
In addition to this achievement, the series has received several awards at prestigious ceremonies, including the Baeksang Arts Awards, Apan Star Awards, and Asia Artist Awards.
The series has a compelling storyline, innovative premises and great performances. The first season ended with an open ending, so these elements will surely captivate fans of the series about what the next second season will have.
“Second Signal”

Kim Eun Hee, the famous writer who wrote the script for the first season, is back to write “The second signal.”Ahn Tae Jin, a well-known director “Owl at night” Instructs the series. Additionally, the well-known production houses (Studio Dragon, Baram Pictures, BA Entertainment) will co-produce the series.
Furthermore, the original cast members reunited, “The second signal.” They are:
- Kim Hae Soo as detective Cha Hyun from the Cold Case Unit;
- Joe Jin Eun as Detective Lee Jae Han
- Lee Jae Hoon is a profiler park Hae Young.
Plus, famous actor Joe Jin Wu “Gangnam B-Side” And his son Hyunju “Good Detective” He will make special appearances in upcoming series. Actor Ahn Jae Hong is known for his role “Mask Girl”and “Chicken nuggets” I will also be participating in the cast. He introduces new characters to the series.
Mark the calendar: TVN “Second Signal” It is set to premiere in the first half of 2026. Stay tuned for the latest information!
In the meantime, take a look at the short clips of the first and final episodes of“signal” The following Korean dramas:
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(tagstotranslate) ahn jae hong