Silent Court

An old person, who lived alone, is found dead in Akabane, Tokyo. The elderly person was strangled to death. Detectives from the Akabane Police Station investigate the case. According to the victim's neighbors, a woman sometimes came in and out of the victim's home. That woman is Yamamoto Miki. She does housework for her customers. The detectives from Akabane Police Station visit her house. But they miss her by seconds because she has been taken into custody by the Saitama Prefectural Police. Then they learned that multiple suspicious death cases have taken place at her prior clients' homes. The media begin covering the story as a serial killer case. Who is Yamamoto Miki? What is the truth behind the cases?