The series was a joint project between Japan’s Tokyo Movie Shinsha and the Italian public broadcasting corporation RAI. Six episodes were directed by Hayao Miyazaki in 1981 until problems with Sir Arthur Conan Doyle’s estate led to a suspension in production. By the time the issues were resolved Miyazaki had turned to other projects, and thus the remaining episodes were directed by Kyosuke Mikuriya. The show was finally aired in 1984. The same year a film version edited together of two of the episodes directed by Miyazaki (The Adventure of the Blue Carbuncle and Treasure Under the Sea) was released alongside Nausicaä of the Valley of the Wind in Japanese theaters, entitled Meitantei Hōmuzu Gekijouban.