This is my favorite anime of all time. I absolutely love it, I used to watch it as a kid and still love to watch it. i just wish they made more seasons for this anime. It's basically the best thriller, comic, heart gripping and absolutely the best detective series out there. Its also known as 'Dan Detective School' or 'Detective Academy Q'. It's a must view and amazing experience.
It's about this boy named Que who is extremely smart and talented, though young. He has a dream of turning into a great detective- which he gets from his mentor, the detective that saved him when he was kidnapped as a child- he turns out to be much more than a mentor later, but you need to watch the anime to understand that. Fate plays a hand by helping him achieve his dream, he meets young Magumi who has a photographic memory and Kinta a strong high school-er and learns about an academy called Dan Detective School that recruits, trains and takes the help of young adults with abilities of becoming great detectives, they are respected even by the police. After getting involved in a tragedy where a man is killed and effectively solving the case he is given the offer to join the school. On his journey he meets more important friends like Kazuma a computer genius and Riu someone just like Que. They together form class Q of the school and are admired by their principal- detective Dan. So it's all about how each of them strive to become better at their jobs. the various plots, murder's, way's of revealing them and presentation will blow your mind. towards the end the bond between Que and Riu is stressed on, but before that we are left with the question who is Riu in reality and what are his intentions?
If I have to find any disadvantages of this anime it would be that they did not make enough episodes! being a typical detective series fan I cant find any flaws here. but from the point of view of a person who does not love these type of series, it could get a bit dull with all the explanations for the different murders and plots but otherwise it will change your mind and make you love it.
I give it a 10/10. a perfect score for a perfect anime. If you wish to catch the entire series I recommend-
http://www.animeshout.com/