Osamu 's assistant and son are suspects to the murder due to being the only ones with keys to the apartment .
Evidence suggests it was suicide but Kogoro notices blood on the trash bin and reveals that it was a murder .
Osamu 's assistant and son are suspects to the murder due to being the only ones with keys to the apartment .
Evidence suggests it was suicide but Kogoro notices blood on the trash bin and reveals that it was a murder .