Well, it's hard to say for sure. Usually, the release date is announced by the production team. Keep an eye on entertainment news or the show's official channels for the most accurate information.
I don't have the specific date. Sometimes, delays or changes in the schedule can happen. It's best to follow the show's official channels for accurate information.
It could be based on a particular historical event or a fictional concept created by the show's writers. But without watching it, it's hard to say for sure.
There was no fixed standard or rule for the ranking of horror episodes in Detective Conan because every viewer had a different definition and experience of horror. However, there were some episodes that were more thrilling and scary in Conan's storyline, such as The Labyrinth of Crossroads, The Dark Organization, Murderer, University Professor, Black Willow, and so on.
If one were to choose a relatively common horror episode, some viewers might choose " The Assassin in the Pupil,"" The Magician at the End of the Century,"" The Specter of Becker Street,"" Detective Conan: The Murder of Magic Lovers," and so on. However, no matter which episode of Detective Conan, the horror elements were only part of the plot and did not affect the excitement and attraction of the entire work.
Detective Conan's Invisible Terror referred to the 198th episode of Detective Conan: The Lost Enterprise. In this episode, Conan and the others track down a character named " Hei Yu Kaito " and discover that he is using a mysterious software to delete their records. As the plot developed, they found out that the software was developed by a person named "Organization". The purpose of the organization was to destroy Conan Doyle's office. This episode was very scary, full of suspense and horror elements. It was one of the classics of Detective Conan.