Md. Code, Estates and Trusts § 4–201

Except as otherwise provided in this subtitle, a person having custody of a will who is not the testator of the will has a duty to maintain custody of the will and unless authorized by the testator may not:

(1) Destroy or dispose of the will;

(2) Disclose the contents of the will to any other person; or

(3) Deliver the will to any person other than the testator.