KCSI: Smoking Gun - Season 1

["Which parent would kill his child?" The case of the death of the second daughter in the swimming pool] A 9-year-old girl who visited the swimming pool with her mother was found with a chilly body in the water. An autopsy showed that the child was 'murdered' not by drowning, but by poisoning. Who is the culprit? would it be?

["I didn't kill!" Twin brother murder case] On March 6, 2011, a three-year-old child was found dead in a residential area in Sillim-dong, Seoul. An autopsy revealed that the child had three broken ribs and his entire body was covered with dark bruises. Who is the culprit who murdered the child so brutally?

["What is the proof that I am the culprit?" Daegu Geumho River Murder Case] In April 2015, a report was received that there was a body on the banks of the Geumho River in Daegu. The body had traces of being hit on the head as many as 17 times by a blunt instrument. Despite the ruthless and horrific assault, there were no defensive marks. While tracking the victim's final movements, the police detect the existence of the prime suspect, Mr. Park (pseudonym). Mr. Park (pseudonym), who had been a close friend of the victim for 15 years, claimed his innocence by complaining of his injustice. That he had no evidence that he was the culprit. Is Park's (pseudonym) claim true?

["The body knows me" rumor of rumor of rumor] In June 2014, an unknown body was found in a small village in Suncheon, South Jeolla Province, and the whole neighborhood was engulfed in fear. The corpse was so decomposed that bones were exposed all over the body, and the identity could not be confirmed at all. All sorts of ghost stories and suspicions spread, such as "It's a 1-2 year old body" and "It was murdered and moved." However, in July, about 40 days after the body was found, even more unexpected news was delivered. The identity of the body is 'Yoo Byung-eon', known as the actual owner of the Sewol ferry! However, rumors did not subside in a situation where the cause of death and whether it was murder were unclear. Is it possible that the body decayed so much in the period of about 15 days from May 25, when he last fled to avoid the prosecution's investigation, to June 12, when the body was discovered?

by a man at the police station. "My mother rarely gets in touch." Her mother's body was found in a miserable state in the house after breaking the door open... The victim was Lee Hee-jin's mother, who is called 'Cheongdam-dong stock rich' and is imprisoned for illegal stock trading fraud. Her whole body was tied up and her head was hit several times, and her mother eventually died of suffocation. What's even more shocking is that traces of torture were also found... The father's body, which was later found in a warehouse in Pyeongtaek, also had traces of torture. The truth of the criminal is gradually revealed through state-of-the-art scientific investigation, including CCTV, bloodstain analysis, and foot prints left at the scene. The killer denied the murder charge until the end, saying, "I didn't kill it," but what was the 'smoking gun' that overturned the decisive evidence?

["The body in the grave speaks" Pocheon pesticide family murder case] The morning of February 27, 2015. Noh, an ordinary housewife, was arrested by the police. In the past three years, Mr. Roh has lived a miserable life, losing his ex-husband and mother-in-law and sending his current husband away. But surprisingly, she was a serial killer who killed her family. The death of her ex-husband, which concluded with suicide three years ago, due to the stress of failing business. A year later, her mother-in-law and her current husband died from the same cause. The cause of death was paraquat poisoning. They are not the only victims. Even Mr. Roh's real daughter is hospitalized for paraquat poisoning... What really made Mr. Roh into a monster? However, there are circumstances, but no evidence. The two husbands have already been cremated, and what remains is the mother-in-law's body, which was buried a year and eight months ago. In the end, he digs up her grave and goes for an 'autopsy'. Can the body be a smoking gun that will reveal Mr. Roh's crime?

["I remember the criminal 14 years ago" - Arcade Murder Case in Oncheon-dong, Busan] In July 2000, a horrific murder occurred in broad daylight at an arcade in Oncheon-dong, Busan, which was bustling with customers. The victim, who was a cashier at an arcade, was found inside a public bathroom with a knife stabbed eight times. The police dispatched to the scene secured a bloody note (fragmented fingerprint) presumably belonging to the criminal, but due to lack of evidence and fingerprint analysis technology that was incomplete at the time, it was eventually left as an unsolved case. And 12 years later, as the National Police Agency's automatic fingerprint search system (AFIS) technology developed significantly, the bloody fingerprints of the 'Busan Arcade Murder Case' were reassessed, and 12 years after the incident, a person matching the criminal's fingerprint 'hand' found Mr. Son, who was identified as a suspect, stubbornly denied the crime. To make matters worse, the original records and evidence from the investigation from 12 years ago were lost, and the re-investigation went through difficulties... And only after 14 years of the incident, the true culprit of the 'Busan Arcade Murder Case' was sentenced to life imprisonment. Just over a year before the statute of limitations expired. What is the smoking gun that played a decisive role in apprehending the criminal?

["DNA knows the murderer" - Gyeongbuk food bar murder case] In July 2008, an urgent call was made to 112. A woman was stabbed to death by a weapon in a small food stall in North Gyeongsang Province! The victim was a landlady in her 50s who ran a food stall, and the condition of her body was also very horrific... Who was the culprit who brutally murdered the hostess at dawn when people were rare? Since it is a restaurant where an unspecified number of people come and go, a total of 136 pieces of DNA were collected at the site. Among them, bloodstains from a broken beer bottle, which appears to be a tool for the crime, were also obtained as a suspect. The detective in charge immediately conducted a DNA comparison on the regular customers, but the investigation was at a standstill for a month. It was because the DNA of all the suspects did not match... In the process of identifying the suspects from the beginning, the investigators used Y-STR analysis and the SCAS crime analysis program. And finally, after a month of the incident, the truth began to be revealed. What is the truth of that day?

["My husband doesn't smoke" - nicotine murder case] On April 22, 2016, a middle-aged man was found dead in his bedroom. An autopsy of the deceased found toxic concentrations of sleeping pills zolpidem and nicotine. A healthy man who never smoked. Could someone have injected poison? Through the Supreme Prosecutor's Office's psychophysiological test (lie detector) and the forensic scientist's nicotine toxicity test, it is proved that this case is a 'nicotine poisoning case'.

["I will take away your most precious thing" - Jeju middle school student son murder case] In July 2021, a cold body was found in a small village adjacent to the beach in Jeju. The victim who was strangled to death with his nose and mouth covered with tape was the late Lee Ji-hoon (pseudonym), a 16-year-old middle school student. According to the neighbors, Lee Ji-hoon (pseudonym) was a kind and polite child, to the point of saying "hello 10 times a day if you meet 10 times a day." was contained The culprits were Baek Kwang-seok (48 years old at the time) and his acquaintance Kim Si-nam (46 years old at the time), who had a common-law relationship with Lee Ji-hoon's (pseudonym) mother! When Baek Kwang-seok's persistent obsession and violence led Lee Ji-hoon's (pseudonym) mother to end her common-law relationship, a terrifying threat and assault began... Eventually, she committed a terrible crime against her son! A brutal murder case committed by two adults against a young middle school student! Together with Bang Cheol, head of the Psychological Analysis Department of the Scientific Investigation Department of the Supreme Prosecutor's Office, and other experts, we dig into the truth of the day.

["Oppa run!" -Gapyeong Valley Murder Case] On June 30, 2019, Mr. Yoon went to a valley in Gapyeong to play with his wife Lee Eun-hae and his wife's acquaintances. That evening, Mr. Yoon, who made his last dive from a 4m high rock into a 3m deep valley, died without being able to get out of the water. Yoon, who was afraid of water, why did he dive? This case concluded as a simple drowning accident or internal investigation. In November 2019, when the insurance company suspected insurance fraud and refused to pay 800 million won for her husband's death insurance, Lee Eun-hae directly reported to the media that she was accusing her insurance company of tyranny. After the tip-off, the case comes to the surface and several suspicions are raised about Mr. Yoon's death. As a result of the re-investigation, the circumstances surrounding Lee Eun-hae and her inner lover Cho Hyun-soo's conspiracy to murder are gradually revealed! Cho Hyun-soo, who directly submitted the diving video of the day of the incident to the police to claim innocence. However, there are a couple of suspicious things in the video. Through forensic video analysis, it was found that the diving video on the day of the incident was a forged video... What drove Mr. Yoon to death?

["A demon with an angel's face?" - A woman's cruel mystery] On February 13, 2005, a fire broke out at a hospital specializing in burn treatment in Gangnam, Seoul. The fire was extinguished by the quick response of 119, but it was an accident that could have led to large-scale casualties. Unexpectedly, the identity of the culprit is a woman in her late twenties! Due to her good looks and good nature, everyone called her her "angel"... During her investigation, the story told by her younger brother of her mother was shocking. Not only did the fire keep repeating around her, but her family was seriously injured or suddenly died. How could these things have happened, the detectives in charge of the investigation began to capture decisive clues that made the woman suspicious... The greatest 'psychopath' tendency, abuse while caring for others for self-satisfaction A woman who said she could see both 'Munchausen Syndrome' and 'Proxy Munchausen Syndrome'! The psychological background of the bizarre crime is explored through in-depth analysis by Lee Kwang-min, a psychiatrist.

["I Saw the Devil" - Sabai Danran Bar Murder Case] In the early morning of June 14, 1998, a taxi driver who was stopped witnessed a terrible scene. A bloodied woman lying in front of a building with a mortal wound to her neck. But what she said was even more shocking. "A person died down there too" In a bar located in the basement, the hostess and two guests are found brutally murdered. From the terrible state of the body reminiscent of a torture site to the meticulous attempt to destroy evidence! However, the police were convinced of an early arrest. This is because several fingerprints and footprints were found, and detailed montages were written by survivors and witnesses, and the investigation was invigorated. However, 25 years later, the whereabouts of the suspects remain unclear. The motive for the crime is also presumed to be not simple robbery as there are more precious metals left behind. In addition, even a lump of hair, which is not common at the murder scene, is found, raising questions. What does the suspect's bizarre behavior mean?

["I beat him, but I didn't kill him" - Missing 5-year-old daughter murder case] On December 8, 2017, a young couple came to a police station in Jeonju and reported missing, saying, "I went outside and came home and the child was missing." Received. The missing child is 5-year-old Ko Jin-hee (pseudonym) who suffers from hypothyroidism and developmental disabilities. About 3,000 searchers, helicopters, and even police dogs were sent in to thoroughly search the entire area of Jeonju, but no clues could be found about Jin-hee (pseudonym)'s whereabouts. Jinhee (pseudonym), where did she disappear to? At that time, as a member of the Scientific Investigation Department of the Jeonbuk Police Agency, he reenacted the forensic hypnosis investigation with a minor inspector who directly participated in the investigation to track down the actual truth of the '5-year-old daughter's disappearance murder case'.

["I'm going to destroy you" - Ko Yu-jeong's ex-husband's murder case] On May 25, 2019, the father, Mr. Kang, headed to Jeju Island to meet his six-year-old son after two years. He couldn't hide his excitement and was the happiest person in the world In an instant, he is separated from his son forever... Where did he disappear to? The police, who started an investigation with Kang's younger brother's missing report, secured the scene of Kang, his child, and his ex-wife, Ko Yu-jeong, entering the pension together with a nearby CCTV. However, Kang There is no appearance of Mr. coming out of the pension! Afterwards, it was revealed that ex-wife Yu-jeong murdered her ex-husband Mr. Kang in the pension. The circumstances of the planned crime are revealed one after another, such as the purchase of crime tools, Internet search words, and the form of bloodstains at the crime scene! The police are unique. We searched the place where Jung was supposed to have damaged or abandoned the body, but in the end, we couldn't find Mr. Kang's body.In this situation, what was the smoking gun that clearly proved Ko Yu-jeong's planned crime?

["The End of the Masked Murderer" - Murder Case of a Single Woman] On March 16, 2003, during drainage construction, the end of an excavator got stuck. A woman's dismembered body was found wrapped in a kimchi bag! What is unusual is that the dismembered body was placed neatly and looking at the sky. Why did this woman die such a terrible death? The identity of the dead woman is Hwang (pseudonym), who was reported missing four months ago. The police quickly identify a person named 'Shin Myeong-ho' as a suspect through investigation of the victim's financial transaction history and the behavior of the people around him. Shin Myeong-ho, who had already been a fugitive on charges of fraud in the past and 11 crimes. The police were confident in apprehending the suspect. But I couldn't find any trace of him anywhere. After the body of the victim Hwang (pseudonym) was discovered, identification was urgently needed to identify the suspect. However, at the time, the body of Mr. Hwang (pseudonym) was in a state of 'silapification' in which wax was made like soap without decaying. Unlike the normal fingerprint collection method, in the case of a corpse that has been silapized, an additional process called 'pre-processing' is required. Together with Sergeant Hong In-ki of the Seoul Metropolitan Police Agency's Scientific Investigation Unit, we will examine what siraphwa is, how to collect fingerprints in siraphwa, and the process.

["I killed a part of the body, not the baby" - Seorae Village infanticide case] On July 23, 2006, the bodies of two babies were found in the freezer of a luxury villa in Seorae Village. The umbilical cord and placenta were still frozen, but an autopsy revealed that the babies were murdered after birth and abandoned in the freezer. Why are babies stuck in these cold freezers? However, Courzo and Veronique go to France and do not come back, saying that they cannot believe the Korean genetic analysis results. In the absence of Veronique's DNA, what was the smoking gun that revealed that she was the mother of the babies? Recently, the bodies of infants who were found one after another through a complete survey of unreported births conducted by the Ministry of Health and Welfare were shocking! The moment when we should be most blessed after being born into the world, the seriousness of the situation where babies are killed or abandoned and the need to prepare countermeasures is pointed out through the case of infants in Seorae Village.

["I couldn't stand the urge" - Nam-gyu Jeong's serial murder case in southwestern Seoul] The so-called 'serial murder case in southwestern Seoul area' that terrified Seoul in 2004. In the southwestern area of Seoul, an assailant attacked and seriously injured or killed young women. A series of incidents occurred one after another: The culprit stabbing a young woman home at dawn... Who the hell committed such a terrible crime? Two years later, the culprit was arrested in a very unexpected place. Simple robbery The shocking truth of the alleged killer was dramatically revealed by the police investigation team! And along with profiler Kim Yoon-hee, who was directly involved in the investigation at the time, we dig into the decisive evidence that uncovered the crimes of the worst murderer ever, Nam-gyu Jeong, and his brutal reality.