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The Best Korean Drama of 2017While You Were Sleeping (2017)Black KnightHate To Love YouI'm Not a RobotJugglersMoney FlowerBecause This Is My First Life


Title: 당신이 잠든 사이에 / While You Were Sleeping
Chinese Title: 當你沉睡時
Genre: Fantasy, Legal, Romance
Episodes: 32 (35 minutes/episode)
Broadcast network: SBS
Broadcast period: 2017-Sep-27 to 2017-Nov-16
Air time: Wednesday & Thursday 22:00 (2 episodes back-to-back)


This is a pre-produced drama. Filming began on 2017-Feb and finished 2017-July.

The drama is about a woman, Name Hong Joo (Bae Suzy), who can see unfortunate events in her dreams, and a prosecutor, Jung Jae chan (Lee Jong Suk) who does everything he can to prevent the woman’s dreams from coming true.


Main Cast

Lee Jong Suk as Jung Jae Chan
Nam Da Reum as Jung Jae Chan (young)
Bae Suzy as Nam Hong Joo
Lee Sang Yeob as Lee Yoo Bum
Yeo Hoe Hyun as Lee Yoo Bum (young)
Jung Hae In as Han Woo Tak
Go Sung Hee as Shin Hee Min

Division 3 Detectives

Min Sung Wook as Lee Ji Kwang
Bae Hye Sun as Son Woo Joo
Lee Ki Young as Park Dae Young
Kim Won Hae as Choi Dam Dong
Lee Jae Kyoon as Choi Dam Dong (young)
Park Jin Joo as Moon Hyang Mi
Son San as Min Jung Ha

People around Jung Jae Chan

Shin Jae Ha as Jung Seung Won (Jae Chan’s younger brother)
Lee Jung Eun as Jae Chan’s mother

People around Nam Hong Joo

Hwang Young Hee as Yoon Moon Sun (Hong Joo’s mother)


Lee Yoo Joon as Oh Kyung Han (Police officer alongside with Han Woo Tak)
Kim Da Ye as Kang Cho Hee (Coffeehouse employee)
Oh Ui Shik as Bong Du Hyun (SBC reporter)
Pyo Ye Jin as Cha Yeo Jung (Police officer who unrequited loves Han Woo Tak)
Heo Joon Suk as Dong Gyun
Hong Kyung as runaway soldier
Moon Yong Suk as Lee Hwan


Kim So Hyun as Park So Yoon (Ep. 3-8)
Jang So Yeon as Do Geum Sook (So Yoon’s mother) (Ep. 3-8)
Uhm Hyo Sup as Park Jun Mo (So Yoon’s father) (Ep. 3-8)
Choi Won Young as Nam Chul Doo (Hong Joo’s father) (Ep. 3-4)
Jang Hyun Sung as Jung Il Seung (Jae chan’s father) (Ep. 1, 5-8)
Kang Ki Young as Kang Dae Hee (Ep. 9-)
Kang Shin Hyo as student (Ep. 10)
Shin Eun Jung as Kim Joo Young (judge) (Ep. 11-12)
Kim Min Jae
Yoon Kyun Sang
Lee Sung Kyung

Production Credits

Directors: Oh Choong Hwan, Park Soo Jin
Screenwriter: Park Hye Ryun

Episode Ratings

    Nationwide Seoul Nationwide Seoul
2017-09-27 1 8.2 (16th) 9.1 (9th) 7.2 (19th) 8.1 (12th)
2017-09-27 2 9.4 (14th) 10.8 (8th) 9.2 (10th) 10.4 (6th)
2017-09-28 3 8.0 (17th) 8.7 (11th) 8.3 (16th) 9.8 (10th)
2017-09-28 4 9.3 (10th) 10.2 (9th) 9.2 (12th) 10.9 (8th)
2017-10-04 5 5.0 5.2 (18th) 5.1 5.6 (17th)
2017-10-04 6 5.5 (19th) 5.7 (14th) 6.1 (11th) 7.0 (7th)
2017-10-05 7 8.3 (13th) 8.2 (11th) 7.9 (14th) 8.2 (10th)
2017-10-05 8 9.6 (7th) 9.9 (3rd) 8.9 (9th) 9.6 (6th)
2017-10-11 9 7.8 (17th) 9.3 (10th) 8.1 (13th) 10.0 (7th)
2017-10-11 10 8.9 (15th) 10.2 (8th) 9.4 (8th) 11.5 (5th)
2017-10-12 11 7.5 (18th) 7.8 (13th) 8.9 (12th) 10.3 (8th)
2017-10-12 12 8.5 (12th) 8.9 (8th) 9.7 (10th) 11.8 (6th)
2017-10-18 13 7.6 (18th) 9.5 (9th) 8.6 (8th) 9.5 (6th)
2017-10-18 14 9.1 (10th) 11.4 (6th) 10.0 (5th) 11.3 (4th)
2017-10-19 15 7.1 7.7 (18th) 7.9 (16th) 8.9 (10th)
2017-10-19 16 8.0 (18th) 8.9 (11th) 8.9 (11th) 9.9 (8th)
2017-10-25 17 7.7 (15th) 8.1 (12th) 7.3 (16th) 7.9 (10th)
2017-10-25 18 8.8 (12th) 9.7 (8th) 8.9 (7th) 10.0 (4th)
2017-10-26 19 6.5 7.0 (15th) 8.2 (12th) 9.6 (8th)
2017-10-26 20 7.4 (18th) 8.7 (8th) 8.9 (8th) 10.3 (6th)
2017-11-01 21 6.5 (16th) 7.6 (11th) 6.9 (13th) 7.9 (9th)
2017-11-01 22 7.6 (11th) 8.9 (6th) 8.4 (7th) 9.7 (5th)
2017-11-02 23 7.0 (18th) 7.1 (16th) 7.3 (17th) 8.3 (13th)
2017-11-02 24 8.2 (14th) 9.0 (7th) 8.6 (9th) 9.9 (7th)
2017-11-08 25 5.7 7.2 (18th) 6.8 (17th) 8.2 (9th)
2017-11-08 26 6.8 (19th) 8.4 (11th) 8.6 (7th) 10.0 (6th)
2017-11-09 27 7.7 (18th) 9.3 (9th) 7.7 (12th) 8.9 (9th)
2017-11-09 28 8.7 (14th) 10.1 (7th) 9.6 (8th) 11.3 (5th)
2017-11-15 29 7.2 (16th) 8.1 (9th) 8.1 (8th) 9.3 (6th)
2017-11-15 30 8.7 (10th) 10.0 (6th) 9.6 (7th) 11.0 (5th)
2017-11-16 31 7.6 (16th) 8.6 (10th) 8.7 (11th) 10.0 (7th)
2017-11-16 32 8.7 (13th) 9.5 (6th) 9.7 (7th) 10.9 (5th)

Sources: TNmS Media Korea & AGB Nielsen Korea

*** Different between TNmS Media Korea & AGB Nielson – Here


Related Photo

(Other Photo from Official Site)

Official Site

Official Trailer
Trailer I
Trailer II
Trailer III

Watch Online in Viki.com

80 Responses to “While You Were Sleeping (2017)”

  1. 1
    Upekshya Welikala Says:

    Most waiting drama of the year. No more dramas for 2 years. Can’t Wait❤️

  2. 2
    silvi Says:

    i can’t waiting this drama and See Oppa Lee Jong Suk..Saranghae Oppa

  3. 3
    Çiğdem Says:

    I am curiously waiting this series lee jung suk always makes good choices

  4. 4
    ulfa Says:

    wah really excited 😍😍😍

  5. 5
    N Says:

    It’s finally here! My most anticipated drama of the year. This better be good. 😍

  6. 6
    Queen Says:

    Can’t wait this drama airing, Wonder if both lead have good chemistry.. 😘😘

  7. 7
    kpopmystars Says:

    waiting this drama

  8. 8
    192.168.l.l Says:

    Cant wait!

  9. 9
    Sabi Says:

    LEE JONG SUK love love love

  10. 10
    sozy Says:



  11. 11
    Raymond Says:

    This is the one that i was waiting for!! For the last 4 years i always thought that suzy and jong suk have very similar vibe and they’ll be great if working on a same project (drama). I can’t believe that even SBS PD had the same thoughts as me. This is fascinating, should i change my career? LOL

  12. 12
    Sososo Says:

    Suzy…her acting is not all that great. My opinion…not interested. But good luck to all the cast.

  13. 13
    Cecilia Says:

    Most anticipated drama… can’t wait good luck!!!!

  14. 14
    While you were sleeping – Site Title Says:

    […] http://www.koreandrama.org/while-you-were-sleeping-2017/ […]

  15. 15
    Bliss Says:

    not a fan of Suzy but I love LJS so Ill try watching for his sake

  16. 16
    While You Were Sleeping, o novo drama de romance da SBS Says:

    […] Fonte: KoreanDRama […]

  17. 17
    Freedomdemon Says:

    thank you so much~!!!!!
    today had watch the beginning 1st & 2nd episode~!!!!
    its so exciting~!!! and so worry for them~!!! (>o <)
    this drama release 2 episode in a day~!!!!! (~v ~)

  18. 18
    Kandy Says:

    Wow so thriller so frightful I can’t sleep for now !! I don’t like this kind of drama ! Even I like him Sorry LJS !

  19. 19
    Fartun Says:

    Today OMG I’m so excited it better not disappoint me😍😍😍

  20. 20
    Kay Says:

    i watch first ep . may i ask is’t a horror ?

  21. 21
    Nonuts Says:

    Horror? It has a supernatural aspect to the story and that often lends to the spooky or horror because writers know very little about the “supernatural” save for what they’ve seen in movies . . . lol!

    I don’t get the criticism of Suzy’s acting. As I see it, her acting is on par with many of the Kpop individuals as well as models that take on roles in Kdramas. So why single her out I wonder? Is it a case of an “echo chamber” dissing of Bae Suzy?

  22. 22
    Nonuts Says:

    First 2 episodes — good. I expect because the story revolves around their dreams (mainly hers) and because he could change the outcome when she couldn’t, they’ll partner up. It appears she’s found her soul mate. They can start a consultancy service; “Precognitive Solutions” . . . Lol!

  23. 23
    astri Says:

    I love this drama

  24. 24
    raulX Says:

    I wait so much for this ! what disappointment! so depressing !

  25. 25
    pepito Says:

    @admin :


    play young Lee Sang Yeob as Lee Yoo Bum

  26. 26
    Player Says:

    don’t get me wrong ! i love Suzy but don’t like this drama for now ! i don’t know what to do watch more or stop now ?

  27. 27
    Negin Says:

    I like the main actor and it seems the story is fine but the thing which annoys me is everybody is dreaming and all of them comes true and it comes really unrealistic . I think it would be better if only Suzy sees dreams and others try to solve problem .

  28. 28
    sss Says:

    So far its all about dream interpretation. like what mediums used to do.

  29. 29
    sss Says:

    Many other asian films have already featured something like this – how pple with troubled dreams sort mediums to interpret them. The medium then advise the course of action to be taken, like perfomiing some religious activities, move house, wear emulets etc to avert disaster. Here, the medium is given a more fanciful name as the prosecutor. The function between the medium in other dramas and the prosecutor’s are basically the same. Story is not new.

  30. 30
    Dayanne Says:

    A must watch koreandrama…
    Suzy is ❤❤❤

  31. 31
    ulfa Says:

    really best drama i like wyws soo muc

  32. 32
    ulfa Says:

    best drama.😍😍😘😘😘

  33. 33
    Chili Says:

    Good job team !!! Fighting !!!

  34. 34
    Simon K Says:

    Best drama currently. The last LJS drama “W” was very good at the beginning but turned into a total disaster in the second half, I hope this drama won’t turn out the same way. The first two weeks are really good and enjoyable. I wish Kim So Hyun will stay on longer. When she was with Suzy together, they are so adorable.

  35. 35
    LuvKDramas Says:

    My thought exactly! 🙂

  36. 36
    forever Says:

    KSH is so lovely but the drama is so so …

  37. 37
    ulfa Says:

    really cannt wait 😍😍😍

  38. 38
    ulfa Says:

    wyws really the best 🖒🖒🖒

  39. 39
    ulfa Says:

    really wyws make me happy and sad 😄😂

  40. 40
    Ann Says:

    Maybe if the female lead is’nt suzi the rating will higher…what’s wrong with korean producer..there’s so many actresses in korea off course whose not only beautifull but good in act..why the female lead has to be her??!!!OMG!!!!!

  41. 41
    dy3girlie Says:

    no chemistry between the two lead.. so sad.. ;(

  42. 42
    Era Says:

    Suzy is not interesting at all in here
    Her acting is still bad, she has short hair which is not suit at all with her, she cant do some chemistry with jongsuk. Too bad for this drama
    I think kdrama is depends on two, male leads n female leads

  43. 43
    ran Says:

    (‘o’) suzy’s acting is so unconvincing. she makes the scene so dull. i hope will give justice to this beautiful story… (“,)ran

  44. 44
    Quene Mae Says:

    This kdrama is so interesting. Suzy’s acting improves alot and every scene makes me feel so excited

  45. 45
    baby shark Says:

    The haters of suzy keep on criticizing her acting just because they dont like her and because they are insecure to her. Be an actress so you’ll know how hard it is for her to keep doing her best but the other people won’t appreciate her.

  46. 46
    krungy Says:

    I’m not a fan of suzy but I can say that she’s really good in here especially on the first two episodes. Fighting WYWS!!!

  47. 47
    Chieeee Says:

    I really like this drama!!! The chemistry bet. the 2 leads are really good.

  48. 48
    2525 Says:

    The story is going to be more interesting. Gets me curious the real reason why they have the same ability to foresee future through dream. Though I thought only hong joo can see it.

    Also, ah one of the best of non overly head over heels man lead charachter even though he is really deeply care and love the girl so much. he is not showing much like other dramas which the man really treat his girl overly like Candy or cinderella story, and jae chan is true gentleman.

    Bet suzy’s character is aimingly to be quiet expresionless yet dorky, fun and smart. And i didnt bother with her acting tho. She is doing great, 4D as always. People tend to see the other female lead is kinda noisy and full of facial expressions and i feel like suzy is showing the character in her own way. and whats so wrong with that?

  49. 49
    irn Says:

    suzy is soo pretty that i forgot its a drama cause feels like cf everytime suzy screen on close up haha. really wanna know what they feel on reunite after they have been rumoring to be dating a few years ago till suzy announce her bf is lee minho >.<

  50. 50
    Simon K Says:

    I like this drama more and more. The story is not totally original but there are enough new twist that make me guessing. Suzy is adorable as usual and her acting may not be first class but I think she deserve more than passing grade. Besides, in this type of drama, the story line and charisma of actor is more important than acting skill. I am just wonder, how many people will honestly think switch out Suzy with Go Sung Hee (second lead) will be better, just saying.

  51. 51
    sinopsis while you were sleeping Says:

    im really excited..

  52. 52
    WYWS Says:

    For the past drama of Suzy I can say that she’s doing really good in this drama. I really admire all her hardships despite of all the criticism of the salty haters of her she keeps on going! Fighting our Bae :*

  53. 53
    Red Says:

    I wonder if woo tak is related to Jung Jae Chan and Nam hong joo when they were young.

  54. 54
    ALLiiee Says:

    Super excited for the next episode especially the kiss scene omg!!!!

  55. 55
    BTS Says:

    If you want to see the Behind the scenes of this drama go look for sbs catch on youtube 🙂

  56. 56
    Guille Says:

    Hi, I am Mexican and I love the korean dramas. You are the best in romantic dramas and fantasy. Thanks for your job.

  57. 57
    Anna Says:

    I really like Han woo tak

  58. 58
    Dina5765 Says:

    Actually i really like this drama..but i dont know, not like any LJS’s drama, until now i can’t feel any chemistry between suzy and LJS, sorry if i’m mistaken. But we’ll see until then. Fighting!

  59. 59
    Era Says:

    wonder why suzy is still bad in acting. I love this drama, but suzy. she ruins the drama with her bad acting. beautiful isnt enough. look at the rating. lee jong suk is ma wish

  60. 60
    JustAPasserby Says:

    Geez, some ppls here always love to shade on Suzy.. some of u blame Suzy for the low ratings? pls take a look with who WYWS being rivals..
    Hospital ship always come 1st with 2 digits now having a neck to neck ratings battle..
    we got the lowest rating as well as other dramas, it’s bc of Chuseok and baseball season..
    if u only grading the drama with the ratings only then almost all dramas are flop too then.. since all drama kinda having low ratings as well.. even TOL has struggles now against WC..

  61. 61
    random Says:

    if the ratings bad it’s all Suzy fault, when the rating up suddenly it’s somebody work..
    hmm.. so far the knets even on Nate are praising WYWS and Suzy acting..
    if u just see a drama bc of the rating it will be ur lose..
    this is the lowest Suzy dramas rating so far as well, but it’s not due on Suzy acting LOL, there are various reasons for that.. and guess what despite that it still hold the 1st place in it’s time slot, even has the most buzz worthy dramas in 3 consecutive weeks,
    if u just judge someone acting just based on the drama ratings, I highly doubt it..

  62. 62
    Neni Says:

    I love bae suzy.. As a singer, performer, dancer. She’s so beautiful, i love her group as well, their songs. But.. As an actress, it doesn’t suit her. I’m trying to watch this drama, because of LJS of course, n i don’t expect that much from suzy. It’s just to bad.. Because this drama could have better rates if…(you can guess it yourself b’cause it’s too painful) just trying to be honest. In my office… There are 5-6 people who love kdrama, especially LJS. But all of them don’t want to watch this drama. Great story but no chemistry, i love the villain and LJS.

  63. 63
    lululu Says:

    I think all idols turn actresses always get underestimated by public. They need time to prove their qualities.

    Tbh, I dont like Suzy as actress (I’ve watched her dramas since Dream High tho). But, I think WYWS is her best performance so far. I like her character here. Her acting improves too.

    I love WYWS. One of the best kdramas so far in 2017 for me.

  64. 64
    lestari Says:

    I like Suzy as an singer too, and I don’t see any progress in her acting in this drama (sorry for Suzy fans). Jung Eun Ji from A Pink and IU are so much better in acting than her, but in my opinion Suzy is a golden child in Korean Entertainment Industry so she is always having first opportunity to get involved in good dramas I think JYP must focus to improve her acting, because despite of her lacking in acting, she is a humble, nice and beatiful person that makes her popular.

  65. 65
    DeeAn Says:

    I can’t feel the cemistry betwen LJS and BS. They acting just so-so. Poor LJS the caracter not strong enough.
    BS face so flat on every emotion.
    Love the second lead actor police officer woo tak 😍😍

  66. 66
    tigerb Says:

    thought reading the comments would make me decide if i should watch this series based on the plot and story line, however most comments are about the lead actress. how unhelpful!

  67. 67
    Hannah Says:

    I don’t hate Suzy, but I don’t love her as an actress too. She’s the kind of idol-turned-actress who I don’t feel excited nor annoyed when she’s cast in a drama. However, I’d say that she has IMPROVED a lot in this drama. I love her in this, BUT I think she needs to work more on her crying scenes, it seems forced. Other than that, I’m starting to respect her as an actress, not just an idol. Fighting Suzy!

  68. 68
    damacrazy Says:

    I must say im not a fan of suzy but i am loving her in this. she is daebak in this drama

  69. 69
    Simon K Says:

    @tigerb, if you don’t care about who is the male and female lead, I would strongly recommend this drama based on story and directing. The story is not totally novel but there are enough twist and turns here and there. I also appreciate the way the director tell the story. Give it a chance unless you are one of those people who don’t like Suzy regardless of how she perform.

  70. 70
    Kdramaqueen Says:

    the rating so bad…

  71. 71
    tigerb Says:

    thanks, Simon K (#69) for giving me your thoughts on this series. don’t care much for suzy, or any other s.k. actor these days. just want to watch something different, hopefully not boiler plate.

  72. 72
    Yoly wang Says:

    Like Kyung Sang and Sung Kyung cameo …they are so funny…hope to see them paired up in a comedy drama!

  73. 73
    hana_goh Says:

    this drama is worth watching..if you don’t care about the rating or how other people think about suzy bad act all this time.. i enjoy this drama so i think it good to watch.. love the dreaming scene, love the funny scene.. Especially in this drama we can’t find cool LJS (like berfore in W or Doctor Stranger or Pinocchio), love his characters as not perfect man, but still awesome as poor and dirty prosecutor… recommended.. hwaiting all cast!

  74. 74
    sanjinyeon Says:

    Up to the last episode Kim Won Hae and Lee Jung Suk make me cry, but my tears are all tears of joy because the story is good and the ending is nice, all the actors and actresses who played their characters are all great, so every drop of my tears are worth falling for this kdrama.

  75. 75
    Wee Says:

    Yup..last episode make me cry so much….heart pain thAt oppa is crying so badly

  76. 76
    Stranger Says:

    Nicely wrapped ending..i love this story..all actors n production team..not too heavy as it have some sense of humour in each episode..i missed it alreadyy!! Pls make more great drama…tq

  77. 77
    Rifti Says:

    I like drama is the bestlah Suzy jongsuk 😘

  78. 78
    Chang mei Says:

    I really like this Drama,,😘😘😘

  79. 79
    sinopsis kdrama Says:

    this drama really really recommend… you must watch!!

  80. 80
    Simon K Says:

    I totally agree with #76 that the story was not too heavy, the director and writer shown some restrain, not like typical Korean drama. There are many illogical plots everywhere (like the prosecutor drinking beer with witnesses the day before the trial or personally prosecute someone who assault him). It probably will not become a classic that people still watching after 5 years but it certainly worth watching if you have not done that yet.

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