Here in America this show is called Case Closed which has become my favorite anime/mystery show of all time.
For a long time I haven't been an anime fan since I out-grew Pokemon. After I was over Pokemon I thought all other anime shows were just childish and silly, well now I'm happy to have been proved wrong.
While some anime shows are just plain wrong for some of them being sexually inappropriate thats something you don't have to worry about with Case Closed. Sure it might have some curse words every now and then but thats one of the reasons I love this show (I don't like cursing but you'll see why I said that in a second). It's full of comedy and surprises without having the kiddie aw's and oh's of such simple little problems. And just adult enough to enjoy and stimulate your mind without worrying about there being some kind of sexual scene coming from around the corner (I know it shocked me to when I first heard of it). This is a purely fun show to watch.
It's about a high-school kid named Jimmy Kudo who is a mystery solving prodigy. He lives alone while his parents are away because his mom is an actress while his dad is a famous book writer. He solves cases every now and then for the chief of police Inspector Maguire. One night when he was out with his best friend Rachael Moore there was a murder. Solving it easily he noticed that two of the suspects were in a hurry to get out of there. So then he followed them, then one of the agents knocked him out and gave him an experimental poison but, instead of killing him something really unexpected happens. He is turned back into a seven-year old little boy. By getting help from his next door neighbor Doctor Agasa (who is also a crazy scientist) he learns that to keep him and everyone else he cares about safe he must keep his identity secret even from his own friends and family or else if the agents find he's still alive then they'll come back to finish the job. So he goes to live with his friend Rachael under the name Conan Edogawa. It also turns out that her father is a detective but not a good one. So with the inventions that Doctor Agasa creates for him he helps Richard Moore (Rachael's dad) solve cases and becomes famous while he's back in elementary school. So now he's waiting for the organization to re-appear so he can get the poison they used on him and create an antidote and turn himself back to normal (thats why he's staying with Rachael and her dad in the first place, Richards a detective so he's hoping that somewhere along the line he'll run into them again).
I know that some of this stuff sounds a little kiddie but it is a great balance between both. It is funny, full of mystery, while some episodes has action and adventure. A must-see series for any anime and/or mystery fan. And even the comedy makes it worth while for those of you that don't care much about both categories.
