(a) Insurance and annuity proceeds payable to a slayer as the beneficiary or assignee of a policy or certificate of insurance or an annuity contract on the life of the decedent, or in any other manner payable to the slayer by virtue of the slayer having survived the decedent, shall be paid to the decedent's estate.
(b) If the decedent is the beneficiary or assignee of any annuity contract, life insurance policy, or certificate of insurance on the life of the slayer, the proceeds shall be paid to the estate of the decedent upon the death of the slayer.
(c) An insurance or annuity company that makes payment according to the terms of the annuity contract, life insurance policy, or certificate of insurance is not liable under this subchapter if payment or performance is made without knowledge of circumstances tending to make this subchapter apply.