(a) In any case in which the death penalty is imposed, in addition to reviewing the case for any error involving the conviction, the Alabama Court of Criminal Appeals, subject to review by the Alabama Supreme Court, shall also review the propriety of the death sentence. This review shall include the determination of whether any error adversely affecting the rights of the defendant was made in the sentence proceedings, whether the trial court's findings concerning the aggravating and mitigating circumstances were supported by the evidence, and whether death was the proper sentence in the case. If the court determines that an error adversely affecting the rights of the defendant was made in the sentence proceedings or that one or more of the trial court's findings concerning aggravating and mitigating circumstances were not supported by the evidence, it shall remand the case for new proceedings to the extent necessary to correct the error or errors. If the appellate court finds that no error adversely affecting the rights of the defendant was made in the sentence proceedings and that the trial court's findings concerning aggravating and mitigating circumstances were supported by the evidence, it shall proceed to review the propriety of the decision that death was the proper sentence.

(b) In determining whether death was the proper sentence in the case the Alabama Court of Criminal Appeals, subject to review by the Alabama Supreme Court, shall determine:

(1) Whether the sentence of death was imposed under the influence of passion, prejudice, or any other arbitrary factor;

(2) Whether an independent weighing of the aggravating and mitigating circumstances at the appellate level indicates that death was the proper sentence; and

(3) Whether the sentence of death is excessive or disproportionate to the penalty imposed in similar cases, considering both the crime and the defendant.

(c) The Court of Criminal Appeals shall explicitly address each of the three questions specified in subsection (b) of this section in every case it reviews in which a sentence of death has been imposed.

(d) After performing the review specified in this section, the Alabama Court of Criminal Appeals, subject to review by the Alabama Supreme Court, shall be authorized to:

(1) Affirm the sentence of death;

(2) Set the sentence of death aside and remand to the trial court for correction of any errors occurring during the sentence proceedings and for imposition of the appropriate penalty after any new sentence proceedings that are necessary, provided that such errors shall not affect the determination of guilt and shall not preclude the imposition of a sentence of death where it is determined to be proper after any new sentence proceedings that are deemed necessary; or

(3) In cases in which the death penalty is deemed inappropriate under subdivision (b)(2) or (b)(3) of this section, set the sentence of death aside and remand to the trial court with directions that the defendant be sentenced to life imprisonment without parole.