12 timestamped notes explaining the Korean cultural context in this episode — customs, idioms, food, honorifics, and history, at the moment each appears on screen. These notes discuss events across the whole episode. To see them revealed scene-by-scene as you watch, use the episode page to find an airing.
The doctor's verdict of 'shock death from cardiac arrest' (심장마비로 인한 쇼크사) carries enormous institutional weight in Korea — once a hospital official delivers this conclusion, challenging it without hard evidence is socially and legally very difficult. Barum's insistence feels almost reckless to those around him for exactly this reason.
In Korea, an autopsy (부검) cannot simply be ordered by police on a hunch; it requires either evidence of foul play or a formal request from the next of kin (유가족). A mother refusing to sign effectively closes the legal door, no matter how suspicious the circumstances look to an investigator.
Barum has just recognised the women at the funeral as relatives of people he himself killed. Korean culture places enormous weight on 위로 (wiro) — offering comfort to bereaved families — so being comforted by the very people he has wronged is an almost unbearable moral collision for him.
Sprinkling salt at someone or their departing figure (소금 뿌리다) is a Korean way of driving off bad energy or an unwelcome person — the same ritual used to purify a space after a funeral. Doing it at a living person's face is a dramatic insult layered on top of the superstition.
True-crime documentary specials re-examining famous Korean criminal cases are a familiar TV genre, often aired on major networks like OBN's real-world equivalents (MBC, SBS, KBS). Families of victims frequently receive unsolicited interview requests, and public opinion on whether such programmes exploit grief or serve justice is sharply divided.
맘 카페 (mom cafe) are online community boards — usually on Naver Cafe — where mothers in the same neighbourhood share childcare tips, local gossip, and job listings like nanny ads. They are enormously influential in Korean neighbourhood life, so posting a childcare ad there would reach exactly the local audience Hong-ju needs.
Crinkling a thin plastic bag near a crying baby is a well-known Korean folk trick — the rustling sound mimics the whooshing the baby heard inside the womb and tends to calm them almost instantly. It's the kind of hands-on parenting knowledge that signals someone has genuinely raised a child.
돌하르방 (stone grandfather) is the iconic lava-rock statue found all over Jeju Island — a symbol of protection and good luck. Bringing a small one back as a souvenir after a trip (especially a honeymoon, which traditionally happens in Jeju) is a classic Korean gift move, which is why the junior detective cheerfully produces one after a wedding.
Korea's 호적 (family register, now called 가족관계등록부) is the official record of every citizen's legal family ties. Being entered into someone else's register — as happens when Barum is adopted by his aunt — legally changes your surname and erases your previous family record, which is why he also asks for a new given name.
The phrase 따라 죽다 (to follow [someone] in death) describes a survivor's impulse to end their own life after losing a loved one. Song Su-ho's mother is describing multiple suicide attempts after her son's murder. If this is something you're struggling with, free 24-hour support is available in Korea at 자살예방상담전화 1393 and internationally at findahelpline.com.
Elementary school (초등학교, grades 1–6, ages 7–12) is the first stage of compulsory education in Korea. Teachers and principals from that period hold detailed disciplinary records, so a former school official's memories of a student's disturbing behaviour carry credible evidentiary weight in a criminal investigation.
Barum's whispered admission — that it was him, not someone else, who caused his own family's deaths — echoes the drama's central question about whether trauma and a brain transplant can create an entirely different moral self. In Korean storytelling this kind of interior confession (혼잣말, talking to oneself) often carries more dramatic weight than any spoken confrontation.