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...

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.

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.

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 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.

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...

Interesting fights between the "Capone Group" and "Jumbo Group".

This is the second film of the ZA KARATE trilogy (AKA BRONSON LEE CHAMPION). Tadashi Yamashita reprises his role as the Karate World Champion and must faces dozens of worldwide pretenders, such as the Guillotine Brothers of New Guinea, Killer Samson, Dracula Jack (Bolo) who all want a shot at him at all cost and also to steal the famous Orikirimaru Sword.

Hoodlum group helps fishermen against firm polluting their fishing ground.

This is the third and final film of the ZA KARATE trilogy. Tadashi Yamashita reprises his role as the Karate World Champion. Local Japanese karate schools are not happy that a Chinese master will take over the Japanese karate organization and will do everything they can to prevent it.

This mid-1970s martial arts classic stars Sonny Chiba as Mu Yun Tek, a young man trained in the Thai fighting style since childhood to one day avenge his parents' death. When a fellow student kills their teacher, Mu Yun's thirst for vengeance grows. The brutal action never stops as Mu Yun teams up with an Interpol agent (Tadashi Yamashita) to find the culprit, who insists that their former master was a drug dealer who had to be destroyed.

This is the Sixteenth film in the series. There were seventeen Wolves of the City films between 1968 & 1974, in the main aimed at shock-value & “pinku” soft-core with sex, nudity, violence, gunplay, & a lot of mainly pointless foolishness when the biker gang coopts racist or nazi imagery, inventing a non-existent youth culture void of morality…

This is the thirteenth film in the series.

The hoodlum group tries to help a little printing factory against gangsters.

Tokyo hoodlums travel to Osaka and enter into rivalry with the local gangsters.

A story of rivalry between two gambling clans.

The first in what would become Toei's most successful, longest-running bosozoku film series. It lasted from 1968 till 1972 through sixteen films.

Pinku from 1971.

Kosaka Hiroshi is a small time swindler and the boss of a motorcycle gang in Shinjuku. Living only to make money, he never made the big time until he gets involved with a Yakuza's daughter. But when he gets involved in a scheme to blackmail a Yakuza gang and a land developer, he realizes he's gone way over his head…