No Evidence to the Contrary

The richest man in the country dies under mysterious circumstances, and every clue points to a vengeful spirit seeking retribution. As panic spreads, only Mu Bei, the head of the criminal investigation team, remains completely calm. He knows that only people can kill, and that this must all be a killer's disguise… But the deeper the investigation goes, the more uneasy Mu Bei becomes. One seemingly unrelated person after another comes to light. Could an invisible hand really be controlling everything behind this case?