granted I love Yoon Sohee and will watch anything she's in. Must say this last minute change is too fishy on the producers part. Poor Yoo Jung, hope she's not hurt or scarred by her first adult role attempt.

Oh no….what kind of decision is that? She's great actress. If the change just because of ratings/ viewers, I don't think the replacement could help. Secret Door storyline and acting is great. The problem is korean audiences's taste now becoming strange. The more strange storyline and awkward actings, the more they like.

maybe KYJ's agent does not want her first adult role in flop drama, so they pull her out.

I really like Yoon Sohee, and I was hoping that she'd get put in another drama soon...BUT NOT LIKE THIS. D:
This decision just confuses me.

Changing an actress & adding "mature" content: What kind of stunt is that? Drama has low ratings cause story is dragging & people are bored, period. A change of staff must have happened at SBS this year, really: Blunder after blunder.

I think rather than shove Lee Sun and Ji Dam onscreen romance, they better make Sun-Hyegyeong OTP...
Park Eun Bin isn't bad in her role, in fact she could carry the drama.
Imagine the angst, one-sided love, etc from that OTP. That would be more interesting than Sun-Ji Dam OTP.
I lost words on how they suddenly replace KYJ with YSH... Truly, bad decision on SBS.

Too Bad.

Again, that's the way they hurt young actors actresses. It remind me of the decision which Yeo Jin Goo was canceled his role in a big movie with the same reason that they need adult actors to make it more intense.

Change young actors to put "mature' lines in drama? Do they mean "bed scenes"! Oh, shit!

Hope they don't be hurt too much because they are still young!

Yoo Jung, Jin Goo, be strong, I'm ready to wait more to see both of you in future.

I Think its because that drama was a total flop in ratings xdd

That's bad, I only watched it because of Kim Yoo Jung, if they will pull her out, I might not follow it anymore. And I might delete the previous episode which I had been downloaded because of the inconsistency of the characters.....bad decision...I will rate you "0" for that.

Bad decision! Okay, I am out of this drama!
KYJ is a talented young actress. Hope, this will not stop her from getting adult roles in the future. Fighting!

I think it's a sad day for the many fans of Kim Yoo Jung. I loved her in all the drama I've seen of her. Unlike most people who hated her character in Secret Door, I loved her. The only reason she seemed one dimensional was because her character was under developed and restricted by Kim Yoo Jung's real age. Meanwhile the princess was given much layers with her one-sided love, politic conspiracy in the palace and her son with Sun. If Ji Dam was developed with much layers other than a mystery novel writer who got caught up in the death of the Crown Prince's best friend, I'm sure their romance would be more believable. I loved the moment of connection Ji Dam and Sun have when they spoke of Sun's idealism to serve the people. To me, that was the defining moment, because no one knew better than Ji Dam of Sun's sincerity to serve the people, Hyegyeong might understand up to a point but she was not supportive of Sun because she knew what kind of life they have in the palace, full of betrayal and lies. And when Sun wanted to protect Ji Dam from the palace life, I was hooked. Now with the change of actress I'm not so sure. I don't care what everyone have said about Ji Dam, Kim Yoo Jung brought her to life for me.

That's enough for me with this drama! Everything will stop here when Kim Yoo Jung leaves it. Goodbye "Secret Door" and no more tension in my head more!

Though Seo Ji Dam is a fictional character and seems to be more fictional with LH, but somehow I fall in love with her with Yoo Jung's cute image. I don't think I accept another Ji Dam once I miss young free Ji Dam. SBS, are you doing?

Noooooooooo! The last time you wished someone would die instead of just *almost* dying (was that City Hunter?)

... something happened.

*goes to sob in a corner*

Secret Door lost me after the first 4 episodes. Disappointing after all the hype. And now this jaw-dropping swap. Feel bad for Kim Yoo Jung. Hey! Pride and Prejudice seems to have way more potential ... worth giving a shot, those of you who have decided to give up on Secret Door.

Nooooo. I know Jidam is a bit boring for people and she's young. Too young for the romance, but I still like her!!!!!

I want to see her and Je Hoon. Not Je hoon and another?! Plus does that mean they'll do a time jump?? Aren't they also over?

This sucks.

Sigh... totally disappointed....
i just going to watch the KYJ episode and saying goodbye to the drama....
Be strong Yoo jung

Purely speculation on my part.. maybe the writers want to bring Bing Ae into the palace to be eventually murdered by Sun, so they'd need to include some form of skinship to "upgrade" the Sun-BingAe's direction. KYJ is a minor so they can't go beyond Sun patting Ji Dam's shoulders and looking at each other longingly. Hence a change of an adult actress would make more sense... what do u all think?

Boo to anyone writing Yoon So Hee off for not being able to save a crappy character. I've seen pretty much all her projects and she's got a lot of potential... how much longer is she supposed to act in the 'friend of...' roles before she's allowed to have a shot at the lead roles anyways? Until she's 30 and getting upstaged by idol girls?

Don't say that because they want to put more "hot scenes" between Sun & Ji Dam to up the rate so they need an adult actress to do this legally? Stupid! They don't know how to use the good actresses they had like Park Eun Bin and Kim Yoo Jung.

IT'S TIME FOR ME TO SAY GOODBYE 'SECRET DOOR'.

My lovable one has gone. So what's the reason I have to stay with it? Now I can let it go and enjoy other drama freely! Tomorrow's Cantabile, here I come!

I couldn't agree more with what Javabeans said.They should've just kill her off in the drama or cast Yoon So-Hee in the first place instead of baffling people!

Anyways,If Yoo Jung is being replaced just because of the viewer ratings and wanted to do mature scenes to make it high,then I will be freaking upset and felt bad for her.I hope that she's actually not being forced to leave because it can mess her up and was such a rude move.It was her first freaking lead role too.

I will try to watch two more episodes and see where it goes.Let's see what the production team is seeing in you, Yoon So-Hee.

I don't even watch Secret Door anymore but I feel this is a bit of an injustice to Kim Yoo-jung. I understand if they maybe needed someone who'd be able to do more 'adult' scenes and that she's too young. But if that was the case, why cast her in the first place? If they can't stick to their initial claim, then they should've killed her off. This is undoubtedly going to be a blow to her confidence, especially since this is her first complete role in a drama.

And if they were going to replace her, why such a weak actress? I suppose they are trying to salvage the ratings or something. Its the lowest rated sageuk of the year and other ones have usually led the pack like EK, JG (when YAAS ended) and Nightwatchman. But I almost don't want this move to work out for them because then it would definitely seem like the reason it was so low was because KYJ couldn't act out the 'adult' part.

OMG. THIS IS THE WORSE THING EVER!!! I'm speechless. PDnim, are you okay??? How crazy are you to change the main lead in the middle of the show?!? Geezzzz. Good luck, PDnim, I won't watch anymore!! Bye!!

PD team messed up by taking out this amazing actress and the drama is almost half done.Poor girl, she must be so excited knowing that she finally got a lead role and then just POOF! she's out of the drama.And then this girl named Yoon Sohee came and replace her. Im quite unsure with myself, whether to still watch the drama or not.I really hope this new girl will do her best and make Yoo Jung proud.

Sigh..I will definitely miss the moments of old Ji-Dam investigating Shin Heung-Bok's death case and the times when she gets to meet Prince Sado.

But the Seo Ji-Dam in my heart will always be Kim Yoo Jung.

Okay so I don't like Ji-Dam, her character wasn't doing it for me and I just didn't like/believe the relationship with Sun that the writers were obviously going towards, but that doesn't mean anyone wanted KYJ replaced. Yes I felt at times she was being out performed but that had more to do with the writing than the actress!!!

I really don't get this sudden actress change. This far in the drama it's not going to change viewers feelings on the character (which I think people like or were just indifferent to) and it most certainly won't make us all suddenly believe Sun and she belong together (especially not with how the writers has progressed them thus far). If anything it may bring backlash and more indifference towards the character. I really would have preferred that they simply kill off Ji Dam with KYJ in the role. Her death would have been huge to Sun and many other characters and could have flipped the narrative on its tale. Such a wasted opportunity for a dumb move in my humble opinion.

I am in this drama for Lee Je Hoon and Han Suk Gyu and the prince and king's relationship (and I also really like the princess) so I am not dropping it. However, this is really unfair and such a shitty thing to do to KJY. I am curious to see how YH does in the role and how the writers use this opportunity to flesh out and hopefully improve the character.

Must be a sex scene written in or something.

oh no!!!! it's time for me to say goodbye secret door !!!
I only watch this for Kim Yoo JUNG and replacing her is a bad decision !!! WRONG MOVE SBS !!

I'm out of this drama !!!
I better watch pride and prejudice !!

what!! I was so looking forward to watching Kim Yoo Jung in a drama where she's actually in it the whole time... omg -___- wtf!!
Now I duno if I should watch this drama anymore...changing actors in the middle like that seems so unprofessional and makes me feel like the drama isn't actually very good...

Wow... This really upsets me. I liked her roal. I have a major problem with any show that gets new actors half way though. It is very concerning that they are doing this because it is clearly for romance reasons, but I am a firm believer that NOT EVERY DRAMA NEEDS ROMANCE! I was enjoying Secret Door WITHOUT all the romantics. I mean, it's a Sageuk for heaven sakes! Also I feel like raitings can ruin a drama. The ratings are bad, but that doesn't mean you need to change the drama, sometimes either (in this case) the people already know the story and are not interested or the compition is just too fierce. Scratch the romance plot line and keep KYJ and then I'll continue watching.

They should never have included her character in the first place, or they should've used an older actress, or they should have just had the guts to make it platonic and not shoehorn in a "pure," "idealistic" romance with the annoyingly cute, whimsical music cues in a drama that didn't need it.

Changing/ taking out actors, writers and PDs is never a good idea. Sad to see suck a great drama turning into trainwreck because of low ratings. I am out.

The producers should have chosen an older actress from the start if they really wanted to force the romance aspect between Ji Dam and Sun.
I never even thought of their relationship romantically. Couldn't they just be friends with the same goal? This drama doesn't need romance. But if it must, it would have been better to see more romance in Sun and Hyegyeong's relationship instead.

Kim Yoo Jung and Yoon So Hee look similar in those photos... I like YSH since I saw her in Let's Eat, but this abrupt change is a bad idea.

I'm still gonna finish this drama, but it's not thrilling me anymore.

I've been slowly catching up on the eps of SD and have been watching mostly for the acting of the 3 leads (esp. HSK), along w/ seeing the many of the usual suspects/faces in sageuks.

1st time seeing Kim Chang-wan dressed in sageuk garb and playing a "nasty" - so that is a bit weird for me.

The story has been decent, but not great (most interesting has been, not surprisingly, HSK's performance as the King which is so diff. in TWDR), but w/ this sudden and ill-thought out move, probably will end up bailing.

They either should have kept the relationship more on the platonic end or maybe a one-sided love/crush (is there a need for romance in everything?) and even if they wanted to do the love angle, don't see the need for the change (unless they really wanted to do a lot of kissing scenes).

It's so weird. This had all the makings of a phenomenal drama.

I seriously though Kim Yoo Jung was Red Velvet's Joy at first.

oh ow,so that's it.they replaced kim yoo jung by a newbie with unknown reason.well it could only mean one thing.i being one her fans would no longer watch this drama since i just wanted this drama for the reason that kyj is the main character.its a pity that i would not be able to watch till the end.

Honestly Kim Yoo Jung was the MAIN reason why I would've considered watching 'Secret Door' and I was actually really excited for her. I was always a little IRKED when I first found out that her lead actor was 30 but I was confident in her acting abilities that I presumed it will be fine, if the writing was done well.

Due to my lack of time, I had to put 'Secret Door' on hold but I was hoping to catch up and watch it starting this week. But now after reading this, my interest in the drama all and itself dropped dramatically.

I'm sad for Kim Yoo Jung and VERY disappointed in the drama production team. Shame on them. I hope she only grows from this situation and not feel discouraged. Kim Yoo Jung, fighting!!!

Hmmm, now I'm hoping she'll get a lead role and it happens to be with Yeo Jin Gu!!! Those two are magic onscreen!!!