there are 654 episodes by the date-
20/5/12
it is still going on.. There is a probability that it will end in between of 700 to 1000 episodes..
The best detective conan site would be gogoanime.com. It is good for anime on the whole.
''there's no ending at detective Conan episode because the episodes of detective Conan are not yet finished. if you don't believe at these you may try searching for all episodes so you can confirmed that the last episode of detective Conan is not been finished'' as long as there is idea in Gosho Aoyama mind -Kaito Kid
Detective conan 670 episode is already released. watch it on gogonaime.com.
"The Shooting of the Promotional Video Case (Part 2)"
there hasn't been one yet, but hopefully there will be, and it will be a happy one!
Episode 491-504 of Detective Conan are the London arc where Conan, Ran, and the rest of the characters travel to London.
youtube.com
Conan gets stabbed in Episode 345 of Detective Conan titled "The Fearful Traversing Murder Case." It occurs during a confrontation with the Black Organization member Vermouth.
It's episode 129 of the anime series Detective Conan.
Detective Conan 2 and half hour episode
309
Well, if you're talking about Detective Conan, it's episode 189!