Started slow with steady mystery build-up that ended on an abrupt screenplay shift. This is primarily this movie's substance.

Joo-ran/Shizuko (Park Bo-young) was sent to an all-girl's boarding school outside of Seoul but was actually a sanatorium, and the sudden change of her environment made her into a quiet and shy student. Her adjustment was slow but expected, which also made the story slow. The plot really picked up its pace when mysterious events are now happening and she was always the witness and her body now somewhat feels stronger, which was unusual since she has tuberculosis when she first arrived.

The horror and thriller parts could've been made more suspenseful and even with the "terrifying" background music plus "chilling" camerawork on scenes where jumpscares were almost certain, it failed to scare me even a bit which was odd for someone that is easily spooked. Furthermore, the pacing of the story could've been made more tense by adding more scenes that would've made me anxious even at the beginning of the story, since as what I mentioned earlier, it was not really mysterious and I didn't know that this was a mystery horror movie. But still, there was a steady build-up of mystery on the unusual events that occured on said school/sanatorium.

This movie's highlight would probably be the "sismance" between Joo-ran/Shizuko and Yeon-deok/Kazue (Park So-dam). Their relationship was portrayed to be just close friends but their chemistry was too strong to think that maybe they were more than friends. It was Yeon-deok/Kazue that really helped Joo-ran/Shizuko adjust to the school life as well as rediscover her old bubbly self. I was more emotionally-invested in them than the plot itself.

The mystery itself was not a mystery anymore, as I knew already what it is based on the context clues scattered in several scenes. However, I was shocked more on the basis of said mystery which was correlated to the time setting of the movie, and I was now able to get the relevance why it was set during the Japanese occupation of Korea. This was not only really a tragedy-in-the-making for the clueless and innocent students of the school, particularly to Joo-ran who had now experienced something strange in her body but also eerie since the school's headmistress Kato Sanae (Uhm Ji-won) has no remorse on what she has done, and will do everything just to be recognized as a loyal citizen of the Japanese empire, even at the expense of her Joseon compatriots.

After watching this movie, I was confused as to why is it called "The Silenced" when it wasn't really explained throughout its run? My interpretation would be based on its premise of having clueless girls being oppressed, thus silenced.