This one surprised me and in a positive way.
I watched it because I am a longtime fan of Park Hee-soon and was glad to see a new drama with him in the lead role.

What is it about? Well, secrets, lies, denial and the ever same muddy downpath of politics.

We get to see a rather shy female lead character who is married to an obviously really nice and considerate husband. He started in politics and for her personal reasons the fl asks her husband for him to keep her out of it and the limelight. He believably promises to do so.

The rather idyllic family picture gets first scratches when their student son is suddenly found dead. We just get clues what could have happened to him but can't be sure. Then, out of nowhere for the couple, the gilrfriend of the son shows up at their doorstep claiming to be pregnant from the deceased. Unwillingly they take her in, also to prevent any image damaging scandal to get out.
Rather slowly, step by further step we find out about the fl's past and what is haunting her, and understandably why she is shy and wants to stay out of the limelight.
Around episode six I was fully sold to the ml being a nice and caring husband and even felt angry towards the fl for not just talking to him and telling him her problem. At that point I couldn't understand why she would not confide in this caring husband of hers. I fully fell for his ways and believed him.

But slowly things start to feel uncertain concerning the ml. Is he really that caring and trustworthy husband? Until epsidode12 I started to feel torn, just like the fl, I was sure he was dishonsest, (and in many ways, especailly _EXcluding_ being unfaithful to her!) I got angry with him and when she confronts him once and again he is so convincingly sad, sounds so truthful and gives such heartfelt explanations that I doubted the feeling of mistrust again Oo

Only in the last four episodes things become clear about the motives and background ties several people have, and it was a first in a long time that I sat in front of the screen being so surprised about the story twists and revelations that come up I even said 'no way! No he did not!' out loud.

Like most I am used to knowing rather fast into a drama who did what, who lies, who betrayed whom. But here I felt so unsure and I was genuinly suprised what happened in the late episodes of this drama, especially concerning the ml who succeeded in luring me in and making be doubt my momentary impression again and again. I just wanted to believe him.

The whole story is also about how rather often women and girls experience vioelence, especially sexual violence and assault, and the rather sad fact that still in many countries the victims are made the guilty ones by society and even police and courts.
The name of the drama 'trolley' is explained quite in the beginning, and in the end makes perfect sense, showing you can only do one good for the cost of another, but never save everyone without losing someone else.
It's a bitter ending with lots of pain, and hurt feelings and some sparks of hope at least.

I highly recommend this if you like dramas that are not obvious and where you won't get everything spoonfed with a verbal explanation. If you are patient enough this drama gets very tense and at least I was not able to pause watching the last 5 episodes, I just had to know what happens next.

I also was (once again, but I might be biased ;) impressed by Park Hee-soon. I first saw him in a movie called 'the scent' many years ago, where, in a completely different setting and mood, he had that ability that although he betrays and does questionable things, I am willing to forgive his character. Same, in a starkly different setting again in 'my name' where in his role as Choi Mu-jin I defintely know he is dangerous and brutal, he still drew me in and I felt sorry for him. This was now the third time, here in a setting as believably caring and loving husband where I just wanted to believe him and even in the very end, after knowing what he did, still felt sorry for him and kind of liked him.
Seems like he as a special psychological thing going and working on me to fall for this and throw my rightly warning ratio overboard.