Maryland Statutes
Subtitle 7 - Trial Procedure
Section 13A-712 - Refusal to Appear or Testify

A person not subject to this title may be punished by a State court of competent jurisdiction if the person:
        (1)    has been duly subpoenaed to appear as a witness or to produce books and records before a court–martial or court of inquiry, or before any military or civil officer designated to take a deposition to be read in evidence before such a court;
        (2)    has been duly paid or tendered the fees and mileage of a witness at the rates allowed to witnesses attending a criminal court of the State; and
        (3)    willfully neglects or refuses to appear, or refuses to qualify as a witness or to testify or to produce any evidence which that person may have been legally subpoenaed to produce.