Who receives the money from life insurance if the beneficiary is deceased the insured or the heirs and there is no contingent beneficiary named?

If there is no living beneficiary when the insured dies then payment of proceeds from a life insurance policy would be paid to the estate of the insured. If the insured had a will then the will provides who receives payment of estate assets. If no will is present then state law will provide how and to whom the assets are paid to. If the estate is very large then estate tax could be due on some of the proceeds of the life insurance policy because they become assets of the estate.