Detective Conan: Two faced detective

What would happen if the top detectives from japan got together to fight against the black organization? Would they become more helping hands? Or would they sooner or later be killed? Something big is about to happen after Conan got an latter adressed to Shinichi Kudo. Actually, Heiji Hattori and an detective named Ruri Kyoka got the same letter as well... An interesting journey to success or death. How will the great detective, Shinichi Kudo end up? Will he succeed? Or die...