is a Japanese television drama aired on every Monday at 21:00 (JST) on Fuji Television from October 7 to December 16, 2019. This is Dean Fujioka's first lead role in the Fuji TV 21:00 drama time slot.

The opening and ending themes are performed by Dean Fujioka.

A special episode aired on December 23, 2019, the week after the last episode. A film version was released in 2022, titled The Hound of the Baskervilles: Sherlock the Movie.

Premise Based on Sherlock Holmes detective stories written by Arthur Conan Doyle, this is a one-shot drama series set in modern Tokyo. The British network BBC also aired the drama Sherlock from 2010 to 2017 in modern London, and the American network CBS also aired the drama Elementary from 2012 to 2019 in modern New York City, but this is not a remake of those dramas.

The subtitle "Untold Stories" refers to "incidents in which only the title is slightly mentioned in the text, but the details are not specified." Producer Dai Ota said in an interview, "I thought something was missing in making use of only the relationship between Sherlock and Watson and making the incidents original. Then, the idea came from scriptwriter Yumiko Inoue was 'Untold Stories.'"

Dean Fujioka plays the main character, Shishio Homare, a criminal consultant equivalent to Sherlock Holmes, and his partner, Junichi Wakamiya, a psychiatrist equivalent to John H. Watson, is played by Takanori Iwata.

Cast and characters Dean Fujioka as Shishio Homare (His boyhood is played by Ruito Yamashiro), a freelance criminal investigation consultant. He has been interested in criminal psychology and human sin since childhood, which led him to solve a number of mysterious crimes as a student. However, he always has a danger lurking inside him and is in danger of becoming a criminal if he makes a mistake. He takes on only those cases that interest him from among the requests the police and individual clients bring. His office and residence suffered a water leak from the upper floor, so he comes to live in Wakamiya's apartment. He was born to a wealthy man, Tatsuo Homare, who had made his fortune from the financial business, and his mother, who became his second wife after having been his mistress. He is a half-brother to his older brother, Makio. When he was 18 years old, Tatsuo died. After Shishio's mother, who was kicked out of the Homare house by Makio who found out that the cause of death of Makio's own mother wasn't an accident, but a suicide, died of a disease, Shishio himself disappeared and moved around abroad without going to college. Five years ago, while in Hong Kong, he assisted in the investigation of the Gloria Scott case, which led him to return to Japan and start his own detective work. The character is based on Sherlock Holmes from the novels and also shares the same initials as S.H. Takanori Iwata as Junichi Wakamiya, a psychiatrist at Tomasu Central Hospital. He has been treated as a "good boy" since childhood and has always lived with loneliness and sadness in his heart, so he has a very sensitive personality. When he first met Shishio after an incident, he didn't have a good impression of him, but gradually becomes interested in his charming attitude and builds trust with him as a buddy. He was a classmate of Haruki Akabane at Ebara Medical College, and they obtained a medical license illegally. He later quit his job as a doctor but couldn't pay the rent, so he ended up living with him instead of working as Shishio's assistant. The character is based on John Watson from the novels and also shares the same initials as J.W. Kuranosuke Sasaki as Reiji Eto, a unit head in the First Investigation Division of the Tokyo Metropolitan Police Department. His rank is Chief Inspector. He believes himself to be an excellent detective, but he isn't a competent detective as he consciously interferes with investigations and has a habit of slacking off. Therefore, while Shishio makes a fool of him all the time, he leads Shishio to start investigating the case by sweet-talking him. He uses Shishio for his promotion, but he worries about and trusts him to a certain extent. At the end of episode 10, he gets his promotion to a manager of the First Investigation Division in the next human resources. However, in the special episode, it is revealed that he hasn't been promoted any further. The character is based on Inspector Lestrade from the novels. Maho Yamada as Kumiko Kogure, a sergeant in the First Investigation Division of the Tokyo Metropolitan Police Department. She is a calm and collected person. Although she considers her boss, Eto, to be excellent, she calmly does her job to solve the case while poking fun at his stray thoughts. She also has an emotional side and sometimes sympathizes with the victims. She doesn't seem to think very well of Shishio and sometimes tells him off. Shishio and others call her Gure. At the end of episode 10, she gets her promotion to the head of the Third Unit in the next human resources. The character is based on Inspector Gregson from the novels. Yutaro as Leo, an informant with many mysteries. Since Shishio picked him up, he has followed the people who are considered suspects and provided him with useful information. It is unclear how he came to know Shishio. He mainly uses a skateboard to get around. He has an androgynous face and is very particular about his clothes. In episode 6, he receives a canary from Shishio, and there's also a scene where he appears with it. The character is based on Baker Street Irregulars from the novels.

Guests Episode 1 Akiyoshi Nakao as Haruki Akabane, a gastroenterologist at Tomasu Central Hospital and Wakamiya's colleague. He had obtained a medical license illegally and was threatened by Gunji about it. So he killed Gunji in a form that Teiko spurred him on. Later, fearing that the fraudulent acquisition of his medical license and the murder of Gunji would come to light, he was mentally forced into a corner and jumped to his death. Marika Matsumoto as Teiko Akabane, Haruki's wife. When Haruki was threatened by Gunji for obtaining a medical license illegally, she spurred him on to kill Gunji. She also schemed to set a trap against Shishio and Wakamiya. Rena Matsui as Mari Mizuno, a nurse at Tomasu Central Hospital. The first person to discover Haruki's body. Yasushi Fuchikami as Takao Gunji, a medical journalist. He holds the important key to the case of Haruki's death by a fall. Like Haruki and Wakamiya, he also tried to obtain a medical license illegally but failed the national examination. Afterward, he threatened Haruki that he would expose the fact that he had obtained a medical license illegally, but Haruki killed him and dumped his body in the sea. Houka Kinoshita as Futoshi Ishii, a security guard at Tomasu Central Hospital. Sei Hiraizumi as Shigeki Imai, the president of Ebara Medical College. He was the professor in charge of Haruki and Wakamiya when they were in medical college and knows their past. Meikyo Yamada as Takashi Akabane, Haruki's father. He is a former professor at the Faculty of Medicine of Keiyo University and on good terms with the Superintendent-General of the Tokyo Metropolitan Police Department, Kanazaki. Yoko Asaji as Masae Akabane, Haruki's mother. She has a cold attitude toward Teiko. Asaki Nishitomi as Hikari Akabane, Haruki and Teiko's daughter. She has been strictly disciplined to correct her dominant hand by Teiko.

Episode 2 Miho Kanno as Aiko Aoki, a lawyer at Darlington Law Firm. She creates an intelligent and calm atmosphere, and her policy is to stay close to her clients for the rest of their lives, even after their defense is over. On the other hand, she has a secret past she wants to keep sealed, and she sometimes shows her impulsive and emotional side unexpectedly. The character is based on Irene Adler from the novels. Yukino Kishii as Misa Kawamoto, a part-time clerk at Darlington Law Firm. She is on friendly terms with Yamashita. Toko Miura as Sawako Yamashita, Aoki's former client. She has a brother who has been sentenced to death for murder. At some point, she began to live under the false name of Hiromi Takahashi. Haruka Uchimura as Mamoru Sasaki, a former boyfriend of Takahashi who was killed by a train at Shinjuku Station. He is a homeroom teacher at an elementary school. Miku as Hiromi Takahashi, Aoki's client. She was being sued for consolation money by the wife of a man that she had an affair with, and Aoki was negotiating with her.

Episode 3 Ayumi Ito as Rieko Ichikawa, a detective in the Second Investigation Division of the Tokyo Metropolitan Police Department. She graduated from Teito University. She was in charge of a jimenshi scam case that occurred five years ago, but she was actually involved with Tanba in the case. Yoshino found out about it, so she killed him. Yoshinori Okada as Kazuhito Furuta, an employee in the real estate department of Prenter House Inc., a real estate company. Five years ago, when he worked at Daitei Construction Co., a property he was in charge of at the time was used for a jimenshi scam, and he caused a loss of 2.1 billion yen to his company. Naomasa Musaka as Masao Yoshino, a former deep sea fishing crew member. He was a member of a jimenshi scam group and was arrested for a jimenshi scam five years ago. He had just been released from prison but was murdered at the Bando residence. Izumi Yamaguchi as Honami Hosokawa, a former housekeeper at the home of Bando who was the president of Daitei Construction Co. Momiji Yamamura as Junko Saito, the wife of a wealthy person living in a property in Shibuya that Furuta is in charge of, and a former hairdresser. In fact, she is an impersonator, a member of a jimenshi scam group, and her real name is Hisae Negishi. Yukihiro Ino as Kohei Saito, the oldest son of a wealthy person living in a property in Shibuya that Furuta is in charge of. In fact, he is an impersonator, a member of a jimenshi scam group, and his real name is Goro Matsushita. Kinya Kikuchi as Tanba, the president of Tanba Club, a real estate brokerage firm. When he worked at Daitei Construction Co., he was a senior colleague of Furuta. He brokered the property that was used for a jimenshi scam five years ago and Saito's property to Furuta. Kisuke Iida as Tanaka, a detective in the Second Investigation Division of the Tokyo Metropolitan Police Department and Ichikawa's boss. Michio as a security guard. The first person to discover Yoshino's body at Bando's residence. Hiroki Nunokawa as a security guard. The first person to discover Yoshino's body at Bando's residence.

Episode 4 Nobuaki Kaneko as Takuya Ishibashi, the president of Ishibashi Hongo Sports Gym, a boxing gym. After retiring, he puts emphasis on training the younger generation as a trainer. Wataru Mori as Kaburagi, a trainer of Ishibashi Hongo Sports Gym. Masato Yano as Yuta Kajiyama, a professional boxer of Ishibashi Hongo Sports Gym. He had won two weight classes and was preparing for his first defense as a lightweight champion. But he suddenly disappeared on the day of the fight. Fujiko Kojima as Yuko Hosoya, a juku teacher. She was a former English teacher at Tomisaka High School and Kajiyama's former homeroom teacher. She got a serious cervical spine injury in the accident caused by Murakawa's destruction of playground equipment in a park and died after a long hospitalization. Kika Kobayashi as Jun Hosoya, a junior high school student of Ishibashi Hongo Sports Gym and Yuko's son. Mayumi Asaka as Ikue Hosoya, Yuko's mother. She took in her grandson Jun after Yuko's death.