Need advice

Hi Few months back my husband committed suiscide. Now after 8 months my father in law is threatening me again and again that uou might have done something. He is giving me mental torture. And keeps on asking questionsandheld me responsible again and again. He is even saying that there is a case against you . Because in his last time my husband has taken my name ghat I'm responsible for it. But till today nobody frkm the police station came to our house to inspect. He keeps on saying that I am solving all this and handling the police also. They will not contact you. But you are responsible for it. He insults me a lot. Shouts upon me over small things. And even says to my daughter that no need to ask for anything from her. I'll fulfill all your needs. He himself brings outsiders to the house and if they talk to me . He starts blaiming me that you have done something . You are in a relationship. He even denies to carry on my job. And even sometimes said that you will not go to your parental house even on festival or something. I am still livid g with in laws. But I have never asked for any kind of money nor did they asked for. I'm in a profession. So I myself bear all expenses of me and my daughter. Pls help me out as he keeps on threatening me again and again. I dont know what he wants. And he even mentioned ghat no need to tell anyone that I talked to you about this matter.