Your sister was murdered by her husband who then committed suicide your sister was first beneficiary on policy do her family have any rights to the life insurance death benefits?

Usually it depends on how the beneficiaries were stated on the policy. If she left all to the husband, then since he was the last to die, his beneficiaries would be the ones who count. But, if she died first, the contingent beneficiaries would be the next on the list. I don't know though, if the murder and suicide would affect this.