Conan no helper

It's been a long time since I watch Detective Conan, and I'm planning to watch an episode that is very scary, I have always loved the creepy scary mysterious atompshere some episodes that have, one of the earliest that scared me shitaki mushroomless is probably the bandage man one, and also those where it features supernatural creatures, etc. So here's my proposal, what is the scariest episode you think from Detective Conan (Out of all 700+ episodes), I might just go watch it, doesn't matter if it's an ark, etc.

This is one of those very old but gold Detective Conan soundtrack. It seems that there's no soundtrack named Shizumuta yo, anyone know what's the name of this soundtrack? Personally, I really like this soundtrack, I wish the developers can return such of tone(Original DC style of tone) back to modern DC anime.