A man dubbed "Karate Kid" is imprisoned and forced to fight for his life in an underground fighting ring.

Two daughters of mobsters get out of the sanitarium after having killed a boyfriend in the shower, supposedly cured and on the right track. They hold a party and invite all their old boyfriends, making all of them think there is still hope for a relationship. Then the boyfriends start disappearing one by one.

A married couple from Poland emigrates to the U.S.,. but things don't turn out as well as they had imaged. The husband's business fails, while his wife's career really takes off. The husband, unable to cope with the pressures of his failed business, his failing marriage and the adjustments necessary to live in a completely different society, begins to take out his frustrations on his wife.

The 11th popular series in which Kyosuke Kamizu, a university professor and a famous detective, challenges the mystery of the murder case. A bank clerk Fukushima was killed by a cyanide compound on a crowded train. Newspaper reporter Yamashita and colleague Kaori, who were on board, immediately started interviewing. In addition, Kaori asked Kyosuke Kozu (Masaomi Kondo), a university professor who had previously elucidated the murder of prussic acid by tablets, for cooperation. As a result of the investigation, it is discovered that Fukushima, who was killed, violently attacked a female college student with his colleagues and forced him to commit suicide...

The third work of the popular series depicting the famous detective Kyosuke Kozu. Blind musician Ryoichi Kashiwagi died of a heart attack. His father, Shigeyuki , is already bedridden and has billions of Japanese yen in assets. Ryoichi's wife Yukiyo and Ryoichi's younger sister Tsuruko have a dispute over these assets. Newspaper reporter Matsushita, who met Ryoichi just before his death, was interviewed, and was told that there was something unnatural about Ryoichi's cause of death. Soon, Tsuruko died mysteriously. Matsushita decides to have Kyosuke Kozu, a university professor and a famous detective, solve the case.

Kyosuke Kozu (Masaomi Kondo), a university professor and a famous detective, is a big magic lover. He was asked to judge the Magic Competition to be held in Ito, and set out with his sister Nobuko, her lover's newspaper reporter Kenzo, and the brothers Shiro Kishibe. On the day, Shigeko Mizutani, who was supposed to play the guillotine technique, went missing, and she was found dead while her sister Yoshiko was taking her place. The suspects include Yoshiko, Shigeko's husband, Ryohei Mizutani, and her secretary, Yuriko.

Kyosuke (Masaomi Kondo) and his sister Nobuko (Yoko Moriguchi) were invited to the 10th anniversary party of the travel agency "Pigeon". At that seat, Ayako, the younger sister of President Gentaro, is shot dead. Other venues included Gentaro's brother-in-law, Palau branch manager Kiriyama, secretary manager Anna, and Miyo, who runs a restaurant on Palau Island. A few days later, Nobuko goes on a trip to Palau. She is kidnapped by someone in the field, and Kyosuke and other related parties rush to her. In Palau, there was Toshinosuke, the founder of Pigeon and retired. He was once a detective called "Sakuradamon Demon", but was accused of being arrested 15 years ago and was ousted from the Metropolitan Police Department. It was Kyosuke who proved his innocence.

Reportage writer Kenzo has made an interview appointment with Morishima, the mastermind behind the political and business world. On that day, Morishima is killed and a 200 million yen diamond is stolen. The diamond was brought by jeweler Kuhara to sell to Morishima. A woman named Maki who was present and disappeared immediately after the incident is suspicious. However, the site is a completely closed room. Kenzo's older brother, Matsushita, the chief of the investigation section, also shook his head...

Kenji, a disciple of the famous detective Kyosuke Kozu, had a strange experience in the world. He was asked by a woman named Shoko Ima to find the corpse in the soil. Shoko is a famous dancer in the modern ballet world, and she just married doctor Fujimoto 10 days ago. However, on that day, Shoko had disappeared. Her corpse seems to be at the base of the ginkgo tree in the house of the sculptor Kagawa, who was rumored to have a romantic relationship. Police arrested Konosuke. However, Kagawa was also suspicious.

Newspaper reporter Kenzo let a strange woman Emi took taxi while on the way home from a business trip. Later, when he stopped by his girlfriend Nobuko's house to give her souvenir, he noticed that the suitcase had been replaced by Emi's. A knife with blood wiped out came out of Emi's trunk. Nobuko's older brother Kyosuke is a university professor, but he is also a famous detective. The next day, Kyosuke made Kenzo follow Emi's elder sister, Yuri, who came to exchange the trunk. Emi and Yuri are daughters of the landowner Kayama family, but they were both children of their ex-wife. His second wife, Shizue, has Miyako, another kid. Emi had a bad time with Shizue and left home, and she had just returned for the first time in three years...

The sixth popular suspense series based on the original work by Akimitsu Takagi. Kyosuke Kozu was invited by former actress Shinobu Yuki, who had previously appeared on a magazine, to announce the production of the drama. The producer is Kako's husband, Fujita. When the press conference was about to end, the leading actress Hitomi was shot dead. She is suspected of being abandoned by Hitomi, her nephew Mizukami, but there is no evidence. Subsequent investigation reveals that Hitomi has been dating Urushida for three months. A few days later, Kako showed Kyosuke three threatening letters stating "Your life will be end in 10 days"...

The 7th popular suspense series based on the original work by Akimitsu Takagi. Along with Kogoro Akechi of Ranpo Edogawa and Kosuke Kindaichi of Seishi Yokomizo, Masaomi Kondo will play Kyosuke Kamizu, one of "Japan's Three Greatest Detectives", and will solve numerous challenges! A threatening letter foretelling the murder of the entire family came to the house of Tobe, who presides over the infamous investment group. Kumiko Toki, the third daughter of the family, consulted with the police, but she simply thought it is done by someone who recently lost investments. Kenzo, a reportage writer who was listening, became interested and brought the threatening letter to Kozu, asking him to investigate...

President Ito, a major apparel maker, was poisoned in the president's office. Kenzo (Baku Ohwada), who happened to be interviewing nearby, rushes to the site. According to his secretary Masae, Ito's ex-wife's younger brother Yoshimoto visited and he started arguing with Ito, but he suddenly escaped. Kenzo asks Kyosuke Kozu (Masaomi Kondo) to investigate. It turns out that Ito's son Takashi, who was killed, is enrolled in Kyosuke Kamizu's university. When Kyosuke Kamizu met at the university, his mother-in-law, Yoko, aimed at his father's fortune and said, "I think he teamed up with designer Kawahara ." Yoko has a relationship with Kawahara, and Ito, who died, was confused because she had an affair with her secretary, Masae. Takashi is said to have already left home and is living on his own.

Kenji Matsushita is a reportage writer. While he was interviewing the tattoo contest, he met a woman with a tattoo of a large snake, Kinue. Kineda is the mama of the bar and the wife of the president of the earth-moving company, Mogami. She was a sympathetic woman, and Kenji was drawn to her body and spent the night together. The silk branch was found in a dismembered corpse in the bathroom of her apartment, and the carved torso of the snake disappeared. Since the bathroom was completely closed, the investigation was stopped. So Kenji consults with his lover, Nobuko's older brother, Kyosuke. Kyosuke is a genius, and he solved the mystery of the closed room without difficulty. However, the criminal cannot be identified yet.

A famous inventor marries a beautiful but much younger woman. His son becomes romantically involved with her.

Lucas Swan, owner of a bed and breakfast, authored a book on a rash of murders a few years before. The murders begin anew, and when police refuse to listen, Swan sets out to kill the killer, only to learn afterward that he somehow survived.

A routine investigation of a shocking murder takes a bizarre twist when the killer contacts the reporter and appoints him his personal spokesman. As the killer's calls and clues increase, the reporter is lured into a deadly trap.