2015 • 16 Episodes
Officer Choi Mu-gak lost his younger sister to a barcode-murder case and lost his ability to taste, smell, and feel pain. He then meets a girl named Oh Cho-rim, who is the only witness to the murder case and possesses a special sixth sense, which is the ability to see smells.
April 1, 2015
After her parents are murdered, a young woman awakens from a coma with total amnesia, and crosses paths with a cop who suffered a loss of his own.
April 2, 2015
Choi Mu-gak agrees to help Oh Cho-rim with her comedy skit in exchange for assistance on a case that could earn him a spot in the Violent Crimes Unit.
April 8, 2015
Cho-rim leads Mu-gak to a body in the river and is later followed. Mu-gak reveals to Cho-rim how he lost his sense of pain, taste and smell.
April 9, 2015
A new barcoded body is found, but Lt. Yeom Mi suspects it's a copycat killer's work. An accidental injury brings Cho-rim to Dr. Cheon Baek-gyeong.
April 15, 2015
When a strangled chef falls off a roof, Kwon Jae-hui becomes a suspect, but a scent leads Cho-rim elsewhere. Mu-gak learns why Baek-gyeong went to Jeju.
April 16, 2015
A confession letter is written and stored. Ju Ma-ri's journals are discovered. Mu-gak figures out what the barcodes on the victims' bodies signify.
April 22, 2015
The Barcode Killer places the next body so it will be found and covers his tracks. Cho-rim's friend Ma Ae-ri is accused of stealing from her employer.
April 23, 2015
Mu-gak is rushed to the hospital, where the police set a trap for his attacker. The Barcode Killer decodes his last victim's cryptic final message.
April 29, 2015
Mu-gak lures the Barcode Killer using fake medical records and a decoy Choi Eun-seol. Yeom Mi creates a police sketch of the woman Cho-rim remembers.
April 30, 2015
Yeom Mi follows her hunch about Cho-rim, who has a flashback to the moment of her accident. The misplaced confession letter is found among some books.
May 6, 2015
Mu-gak snoops in Yeom Mi's office and learns why she took him off the case. The Barcode Killer visits Cho-rim's dad to find out who the witness is.
May 7, 2015
Cho-rim manages to escape from the Barcode killer, who steals a photo from her father's home address in order to identify her.
May 13, 2015
Cho-rim reveals her special ability to the entire Violent Crimes Unit. The Barcode Killer uses the witness's old school friends to lure her into a trap.
May 14, 2015
When the police are unable to find the secret room where Yeom Mi is being held, Cho-rim contacts the Barcode Killer and volunteers to take her place.
May 20, 2015
The Barcode Killer makes a run for it. Cho-rim remembers more about her parents and the day of her accident. A romantic gesture backfires on Mu-gak.
May 21, 2015
The Barcode Killer abducts Cho-rim in order to lure Mu-gak into a deadly trap, but Cho-rim leaves behind a clue that could save his life.