The Supreme Court, in deciding each case when there is a conflict between its existing opinion and any former ruling in the case, must be governed by what, in its opinion, at that time is law, without any regard to such former ruling on the law by it; but the right of third persons, acquired on the faith of the former ruling, shall not be defeated or interfered with by or on account of any subsequent ruling.
Ala. Code § 12-2-13 (1975)