Signal Drama Review – A Must Watch Thriller Korean Drama

Signal is the highest rated thriller drama that is popular & appreciated by all.

If you love to watch thriller movies or series & if you haven’t watched Signal drama, are you really a thriller lover?

If you are confused about whether to watch the Signal drama, then get ready to read this Signal drama review.

This review is spoiler-free!

If you are new to Kdramas, here is a warning: you will get addicted. Yes! Kdramas are difficult to leave once you start watching them. You tend to keep watching them more and more.

The reasons for Kdrama addiction are – heart melting romance, interesting plot & twists, different culture & a lot of comedy moments. They successfully create an emotional connection with the viewers.

You may have heard that Kdramas are popular for their romance. But wait, there are numerous thriller dramas you will find interesting. Thriller Kdramas are one of the best when it comes to storyline & twists.

Signal Drama Review

Signal is a Korean drama of 16 episodes aired from January 22 to March 12, 2016, on the tvN channel in Korea. Now, it is available worldwide to watch on Netflix. The series was inspired by real-life criminal incidents in Korea, including the Hwaseong serial murders.

Signal kdrama review

Summary –

Two detectives Park Hae Yeong & Lee Jae Han from the present (2015) and from the past (1989) communicate via walkie-talkie to solve different cases & a long-time unsolved case.

Main Characters

Lee Je Hoon as Park Hae Yeong - Signal
Lee Je Hoon as Park Hae Yeong

Lee Je Hoon plays the role of “Park Hae Yeong” who is a profiler in the present. He finds a walkie-talkie that connects him to a detective in the past.

Kim Hye Soo as Cha Soo Hyun - Signal
Kim Hye Soo as Cha Soo Hyun

Kim Hye Soo plays the role of “Cha Soo Hyun” who is a detective in the present. She leads the “Long Term Cold Case team.”

Jo Jin Woong as Lee Jae Han - Signal
Jo Jin Woong as Lee Jae Han

Jo Jin Woong plays the role of “Lee Jae Han” who is a detective from the past. He gets connected to Park Hae Yeong through walkie-talkie.

Why You Should Watch?

Signal is one of the top-rated & popular thriller dramas. Why? Because of its storyline, great actors & suspense. It will keep you hooked till the end. It will encourage you to watch the next episode.

As they talk with each other, they try to solve different cases. Hence, you get to see many cases getting solved by them. You will get to know who was behind each case, how it was conducted, etc.

Besides thriller, you also get to see a little bit of romance between Lee Jae Han & Cha Soo Hyun. The drama shows how they met, what happened to them later. It is good to see some romance in a thriller drama.

Signal drama friendship

Talking about the ending, Kdramas are famous for their sad or happy ending. The ending of Signal is a bit confusing but will make you happy. The ending is what makes you think of Signal season 2.

This drama has been remade in Chinese & Japanese language. This proves why the ratings are high. Everybody loved the Signal drama. You will never get to see any negative reviews.


Here are some questions answered that you may ask.

Is the Signal worth watching?

Definitely Yes! It is recommended to watch the Signal drama if you are into thrillers. It is one of the highest rated Korean drama in the thriller category.

Where can I watch the Signal drama?

You can watch the drama on Netflix & Viki. If you don’t have a Netflix subscription, you can still watch it on free streaming sites.

Is Signal drama family-friendly?

Yes, the drama is family-friendly. There are no obscene scenes in this drama so it can be watched with anyone.

How long are the episodes?

All the episodes’ duration is about 60-90 mins. There is a total of 16 episodes.




Signal is a must watch drama for people who are into thrillers. Even if you are not interested in thrillers, it is recommended to watch this drama.





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Hi! I'm Alma Santos from Philippines. I have watched over hundreds of dramas and can speak Korean a little bit. My favorite drama is Crash Landing On You.

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