Maryland Criminal Law Section 2-203

      A defendant found guilty of murder in the first degree may be sentenced to imprisonment for life without the possibility of parole only if:

            (1)      at least 30 days before trial, the State gave written notice to the defendant of the State's intention to seek a sentence of imprisonment for life without the possibility of parole; and

            (2)      the sentence of imprisonment for life without the possibility of parole is imposed in accordance with § 2-304 of this title.