S Line - Where to Watch, Reviews, Trailers, Cast - Watchmode

S Line

Mysterious red line entangles lives; ideal for fans of thrillers and mysteries, but may baffle those seeking straightforward plots.

Genres: Drama, Mystery, Fantasy, Thriller

Cast

  • Cast member 1
  • Cast member 2
  • Cast member 3
  • Cast member 4
  • Cast member 5
  • Cast member 6
  • Cast member 7
  • Cast member 8
  • Cast member 9

Your Status

S Line

TV-MA
TV Show2025KoreanwavveDrama, Mystery, Fantasy, Thriller
1 Season6 EpisodesEpisode Guide
6.5
User Score
IMDb

Where to Watch

Overview

A young woman with the ability to see mysterious red connections between lovers discovers her secret gift is no longer unique when special glasses granting similar powers appear on the black market.

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Featured Comments/Tips

S Line is a brilliant, unconventional K-drama that I couldn't stop watching. The concept is genius: everyone can see red lines connecting people who have had sex, leading to chaos and a thrilling murder mystery. It's a quick, six-episode binge that doesn't waste a single moment. Lee Da-hee is absolutely incredible as the mysterious teacher, Kyu-jin. She instantly draws you in with her calm, unsettling presence, especially since she's one of the few people without an S Line. Lee Da-hee delivers a powerful and nuanced performance, keeping you guessing whether Kyu-jin is a victim, a villain, or something else entirely. Her acting elevates the entire show, making an already tense story even more captivating. This drama is a must-watch for its unique premise and Lee Da-hee's phenomenal acting. I give it a 9 out of 10

The show was interesting, but the finale didn’t do justice to the rest of drama.

I adore the series. So and so until episode five for me. However, after seeing the most recent episode, I think the show is good. The conclusion seemed to completely switch between the genres of drama, supernatural, and sci-fi. I don't know why, but I think the ending is great. I know everyone else doesn't.

Love the series. So and so until episode five for me. However, after seeing the most recent episode, I think the show is good. The conclusion seemed to completely switch between the genres of drama, supernatural, and sci-fi. I don't know why, but I think the ending is great. I know everyone else doesn't.

Love the series. So and so until episode five for me. However, after seeing the season finale episode, I think the show is good. The conclusion seemed to completely switch between the genres of drama, supernatural, and sci-fi. I don't know why, but I think the ending is great. I know everyone else doesn't.

Featured User Reviews

a girl was born with the ability to see red lines and we follow her and several characters that are directly or somewhat involved with the red lines. it was honestly rlly intriguing. i was in slump of what to watch and this hooked me from start to finish. each episode just kept hooking and surprising me. i loved seeing the dynamics on different people and how they interacted and used the glasses. it took a weird,,? turn towards the end but i loved the watching experience nontheless. i hope we get season two >< such a fun watch. contemplated reading the webtoon ver. lolol 4.5 stars !

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S Line Poster

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Available in 1 Countries

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India

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