Koh Sewon (Lee Sun-kyun) gets closer and closer to finding more clues about what happened to his son in Apple TV+’s Dr. Brain Episode 4. Sewon has been using the memories of the dead through brain syncs to unravel the mystery that has ruined his family since the first episode of the Korean drama. The shocking truth behind Sewon’s death is revealed in Episode 4, as well as who might be behind the larger picture that has yet to be fleshed out.
[Warning: This article contains spoilers for Dr. Brain … ]