The episode continues to develop the "odd couple" dynamic between the two leads:
The fourth episode of , titled "Part 4," significantly ramps up the supernatural mystery as Si-ohn begins to piece together the connection between the ghosts she sees and the living people around her. The Case of the Ghost Fianceé
: Gun-woo officially transfers to the joint investigation team to assist Si-ohn, marking a shift from his initial skepticism to a more collaborative (if still somewhat begrudging) partnership. Character Dynamics & Development [S1E4] Who Are You?
This episode centers on a high-stakes investigation involving a cold-hearted lawyer, Prosecutor Park Woong-joon.
: Gun-woo provides much of the show's warmth and "goofy" energy, serving as a foil to Si-ohn’s more serious demeanor. The episode continues to develop the "odd couple"
: As she digs deeper, Si-ohn starts to suspect the prosecutor’s involvement in the woman’s death, creating a tense atmosphere of legal and supernatural conflict.
By the end of the episode, the groundwork is laid for the season's overarching mystery. While the "ghost of the week" provides immediate tension, the show begins to drop more hints about Si-ohn’s own past and the night she fell into her six-year coma. Review – Who Are You (2013) - subtitledreams : Gun-woo provides much of the show's warmth
: She remains a focused, slightly detached protagonist who is still adjusting to her post-coma life and her unwanted "gift" of seeing the dead.