Voice (Season 1)

Everything you need to know before you hit play.

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Voice (Season 1)

보이스 (Boiseu) · 2017 · South Korea

WriterMa Jin-won

DirectorKim Hong-sun, Kim Sang-hoon

Episodes16 eps · ~60 min each

AiredJan 14 – Mar 12, 2017

GenreThriller · Mystery · Psychological

Content Rating15+

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Serial KillerVoice ProfilingPolice ProceduralEmergency Call CenterRevenge

One box. Everything you need to decide.

A grieving detective, a voice profiler who won’t let a case go unsolved, and the serial killer connecting both their losses.

Jang Hyuk

Moo Jin-hyuk

Lead

Lee Ha-na

Kang Kwon-joo

Lead

Son Eun-seo

Park Eun-soo

Supporting

Yesung

Oh Hyun-ho

Supporting

Baek Sung-hyun

Shim Dae-sik

Supporting

Jo Young-jin

Bae Byung-gon

Supporting

Son Jong-hak

Kang Kook-hwan

Supporting

Lee Hae-yeong

Jang Kyung-hak

Supporting

Kim Jae-uck

Mo Tae-goo

Supporting

Kwon Jae-hwan

Cheon Sang-pil

Supporting

Kim Roi-ha

Nam Sang-tae

Supporting

Yoon Ji-min

Jang Gyu-a

Supporting

Spoiler-light recaps — enough to remember where you left off, nothing that ruins the ride.

EP 01

A Voice in the Dark

Jan 14, 2017

Detective Moo Jin-hyuk loses his wife to a serial killer, and three years later watches the system fail him twice — first when Kang Kwon-joo’s testimony contradicts the case against the man accused, then when that contradiction gets the suspect released entirely. Kwon-joo isn’t wrong, though; her acute hearing genuinely didn’t match the voice she overheard the night her own father died, and that commitment to accuracy over convenience is what eventually drags Jin-hyuk back into her orbit. Their reunion happens over a kidnapped teenager, not a reconciliation — professional necessity forces two people who each have reason to resent each other into the same room.

EP 02

Healing Mother’s Two Faces

Jan 15, 2017

The rescue of Park Bok-nim becomes the show’s founding case study in what Kwon-joo’s ability actually does — turning half-heard sounds through a phone line into a floor plan, a location, a countable number of seconds before it’s too late. Jin-hyuk’s desperation reads less like heroism than like a man trying to win a fight he already lost once. The successful rescue and arrest of Jo Kang-chun gives the Golden Time Team its first real proof of concept, and gives the show its formula: profiling plus street instinct, working the clock together.

EP 03

Healing Mother’s Two Faces

Jan 21, 2017

A child-abuse case involving Son Ah-ram and his mother forces Jin-hyuk to sit with material that echoes his own family history, and the show doesn’t rush him past the discomfort. Kwon-joo finally tells him the fuller version of her father’s death — the same night, the same killer’s voice she’s certain doesn’t belong to the man who went to prison for it. It’s the episode where their partnership stops being purely tactical and starts being personal.

EP 04

Dark Generic Bell Sound: The Secret of the Chocolate Box

Jan 22, 2017

The kidnapping of Eun-byul, sister to their own teammate Park Eun-soo, gives the case an inside stake it hasn’t had before. Kwon-joo’s suspicion of something larger gets confirmed the ugly way, when Go Dong-chul — the man originally tied to Jin-hyuk’s wife’s murder — turns up dead in what’s ruled a suicide a little too conveniently. The show starts widening its lens here, past a single killer toward whoever’s been protecting him.

EP 05

The Secret of the Trash House: The Pupil in the Wall

Jan 28, 2017

Kwon-joo becomes the victim instead of the profiler, buried alive by the same people connected to Eun-byul’s disappearance, and the show lets that reversal land as genuinely frightening rather than a plot mechanic to resolve quickly. Jin-hyuk’s search for her runs in parallel with the ongoing hunt for Eun-byul, splitting the team’s attention exactly when it can least afford to be split.

EP 06

The Secret of the Trash House: The Pupil in the Wall

Jan 29, 2017

A body found inside an apartment buried in trash turns out to be connected to something bigger than a single crime scene suggests, and a witness named Kyung-il finally gives Kwon-joo something she’s wanted since episode one — someone who actually saw her father’s killer. Jin-hyuk and Kwon-joo start working this lead separately, each convinced they’re finally closing in.

EP 07

The Secret of the Trash House: The Pupil in the Wall

Feb 4, 2017

Another body, another hoarder’s apartment, another family with something rotten underneath its ordinary surface — the horror here isn’t a stranger breaking in, it’s what’s already inside a household nobody thought to look at closely. Kwon-joo’s reconstruction of the victim’s last moments through sound alone is the episode’s best demonstration yet of what her ability is actually for.

EP 08

The Secret of the Trash House: The Pupil in the Wall

Feb 5, 2017

A new killer targeting women forces the team to recalibrate mid-investigation, and the show uses Jin-hyuk’s own capture to prove just how far outmatched they might be. Kwon-joo tracking him down under pressure is less a rescue montage than a demonstration that she’s stopped needing him to be the one doing the saving. The stakes visibly reset here — this isn’t the same case they started with.

EP 09

The Devil’s Whisper

Feb 11, 2017

A hostage situation at a club puts Officer Oh Hyun-ho directly in the path of a man named Yang Ho-sik, and the crisis becomes as much about Hyun-ho confronting something in his own past as it is about the standoff itself. Kwon-joo’s read on small, specific sounds is what keeps the team oriented inside the chaos. It’s a strong showcase for a character the show has mostly kept in a supporting role until now.

EP 10

The Devil’s Whisper

Feb 12, 2017

The serial killer’s identity — Mo Tae-goo — starts coming into focus, piece by piece, as Jin-hyuk and Kwon-joo work backward through old cases that suddenly read differently with a name attached. The show is patient here, letting the reveal build through accumulation of detail rather than a single dramatic unmasking.

EP 11

The Devil’s Whisper

Feb 18, 2017

Tae-goo’s connection to a powerful chaebol family turns this from a manhunt into something closer to institutional exposure, and the show doesn’t soften how much protection money and status can buy a killer. Jin-hyuk and Kwon-joo pushing against that protection is where the personal case and the systemic one finally merge into a single fight.

EP 12

The Devil’s Whisper

Feb 19, 2017

A discovery at a mental hospital puts a potential witness, Baek Jin-goo, directly in Tae-goo’s crosshairs, and Kwon-joo’s read on the situation makes clear this isn’t a killer covering his tracks reactively — he’s actively hunting anyone who could expose him. The team’s race to protect witnesses becomes as urgent as the hunt for Tae-goo himself.

EP 13

The Devil’s Whisper

Feb 25, 2017

Nam Sang-tae’s phone call to Jin-hyuk arrives dressed as an opportunity and reads like a trap from the first word, and the team has to decide how much risk a lead this dangerous is actually worth. The show leans into its crime-underworld machinery here — favors, leverage, and the uncomfortable possibility that beating Tae-goo might require getting closer to his world than anyone’s comfortable with.

EP 14

The Devil’s Whisper

Feb 26, 2017

Kwon-joo hears Tae-goo’s voice directly and knows, with the kind of certainty her ability doesn’t allow her to doubt, that he’s the killer — connections and money be damned. It’s the turning point the whole season has been building toward: proof that can’t be argued with, even if the people protecting him can still make it disappear.

EP 15

The Devil’s Whisper

Mar 4, 2017

A bus accident tied to Tae-goo’s family company, Sungwun Express, blows open a criminal network bigger than one killer’s body count, and Jin-hyuk’s discovery of a police informant on Tae-goo’s payroll turns the threat internal as well as external. The show spends its second-to-last episode making sure the danger feels total, not contained to one final confrontation.

EP 16

The Devil’s Whisper

Mar 12, 2017

Jin-hyuk and Kwon-joo corner Mo Tae-goo in a last confrontation that costs them plenty to get to, and the arrest that follows finally gives Jin-hyuk something he’s been chasing since the pilot — not just justice, but permission to stop. Kwon-joo gets her own closure over her father’s death in the same stroke. The season ends quietly, two people setting down a weight they’ve carried since episode one, with the Golden Time Team’s mission intact for whatever comes next.

Full spoilers ahead — everything that happens in the finale and what it all means.

What actually happened Jin-hyuk and Kwon-joo track Mo Tae-goo down and take him in a final confrontation that costs both of them physically and emotionally before it costs Tae-goo his freedom. His arrest closes the case that’s driven the entire season — the murders of Jin-hyuk’s wife and Kwon-joo’s father both trace back to him, directly or through the network protecting him. Justice, in the show’s plainest sense, gets served.

What it took to get there What makes the arrest land is everything it took to get there — not just sixteen episodes of investigation, but the corrupt infrastructure of money and status that spent most of the season actively working to keep Tae-goo untouchable.

What it means Voice’s ending isn’t really about catching a killer — that was always going to happen eventually in a show built this way. It’s about what catching him actually gives back to the two people who lost the most: not their loved ones, obviously, but the ability to stop carrying the case as the only thing defining them.

What each of them gets Jin-hyuk gets something closer to permission than triumph — permission to stop fighting a battle that’s occupied every waking moment since his wife’s death. Kwon-joo’s closure works the same way: her father’s death finally has an answer attached to it, which doesn’t undo the loss but does let her stop living inside the question.

The KDW verdict The finale doesn’t pretend the Golden Time Team’s work is finished — new crises will keep coming through that emergency line, with or without Tae-goo in custody. What it does close, cleanly and without excess sentiment, is the specific grief that started the season. Voice ends on two people finally exhaling, not on a victory lap.