An elderly person living alone at home! Strange death in two weeks?

Rule:
The host tells a fragment of the story, and players can ask the host questions in order. The host can only answer yes or no. The winner is the one who guesses the truth of the story or is close to the whole story.
prop:
1. Explanation card: Used in one's own turn, when the host gives a negative answer to one's question, this tool can be used to obtain an explanation for that answer.
2. Tip card: Used in one's own turn, before asking a question, the host can provide a prompt based on the previous player's question.