Maryland Code, Estates and Trusts § 4-204

(1) The attorney is licensed to practice law in the State;

(2) At least 25 years have elapsed since the date of the execution of the will;

(3) The attorney has no knowledge of and, after diligent inquiry cannot ascertain, the address of the testator; and

(4) To the best of the attorney's knowledge, the will is not subject to a contract to make or not to revoke a will or devise.

(b)(1) Except as provided under subsection (c) of this section, an attorney authorized to dispose of a will under this section shall file the will with the register of the county where the testator resided when the will was executed along with an affidavit certifying that the conditions of subsection (a) of this section have been met.

(2) The register shall charge and collect any fee established under § 2-206 of this article for the filing of the will and affidavit.

(3) On the filing of the will and affidavit under paragraph (1) of this subsection, the register may destroy the will but shall retain an electronic copy of the will and affidavit.

(d)(1) The disposal or destruction of a will in accordance with this section may not be construed as a revocation of the will under § 4-105 of this title.

(2) The contents of a will disposed of or destroyed in accordance with this section may be proven by other types of evidence.