During the second hearing , Conan tranquilizes Kogoro to reveal Kamedo to be the murderer .
After Kogoro was turned unwittingly from the defendant 's witness to the prosecutor 's witness Kogoro conducts his own investigation and investigates Usami 's home while accompanied by Conan .
During the second hearing , Conan tranquilizes witness to reveal Kamedo to be the murderer .
After Kogoro was turned unwittingly from the defendant 's witness to the prosecutor 's witness Kogoro conducts his own investigation and investigates Usami 's home while accompanied by Conan .