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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)
Go Woo Rim as Seung Won (young)
Lee Jung Eun as Jae Chan’s mother
Jang Hyun Sung as Jung Il Seung

People around Nam Hong Joo

Hwang Young Hee as Yoon Moon Sun (Hong Joo’s mother)
Choi Won Young as Nam Chul Doo


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


Kim So Hyun as Park So Yoon (Ep. 3-8, 32)
Uhm Hyo Sup as Park Jun Mo (So Yoon’s father) (Ep. 3-8)
Jang So Yeon as Do Geum Sook (So Yoon’s mother) (Ep. 3-8)
Kang Ki Young as Kang Dae Hee (Ep. 9-13)
Kang Shin Hyo as Gyu Won (Ep. 10)
Shin Eun Jung as Kim Joo Young (judge) (Ep. 11-12)
Baek Sung Hyun as Do Hak Young (ep 13-20)
Cha Jung Won (차정원) as Yoo Soo Kyung (ep 13-20)
Jun Gook Hwan as Yoo Man Ho (ep 15-20)
Ham Sung Min (함성민) as student (ep 17-19)
Moon Yong Suk as Lee Hwan (ep 19-24)
Ryu Tae Ho as Moon Tae Min (ep 21-24)
Kim Ki Chun as Lee Hwan’s dad (ep 21-24, 32)
Yoon Kyun Sang as couple at farm (ep 21)
Lee Sung Kyung as couple at farm (ep 21)
Yoon Yong Hyun as Park Dae Young (ep 25-26)
Lee Jae Won as Jo Yoon Pyo (ep 25-28)
Lee Eun Woo as Ha Joo Ahn (ep 28-30)
Son Byung Ho as President Go (ep 29-31)

Production Credits

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


2017 SBS Drama Awards: Best Couple Awards – Lee Jong Suk and Bae Suzy (While You Were Sleeping)
2017 SBS Drama Awards: Best Supporting Actor – Kim Won Hae (While You Were Sleeping)
2017 SBS Drama Awards: Excellence Actor (Wed-Thurs Drama) – Lee Sang Yeob (While You Were Sleeping)
2017 SBS Drama Awards: Top Excellence Actress (Wed-Thurs Drama) – Bae Suzy (While You Were Sleeping)
2017 SBS Drama Awards: Top Excellence Actor (Wed-Thurs Drama) – Lee Jong Suk (While You Were Sleeping)

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

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

Pages: [1] 2 3 » Show All

  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.

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