Md. Code, Criminal Procedure § 5–101

(a) This section shall be liberally construed to carry out the purpose of relying on criminal sanctions instead of financial loss to ensure the appearance of a defendant in a criminal case before verdict or pending a new trial.

(b) (1) Except as provided in subsection (c) of this section, if, from all the circumstances, the court believes that a minor or adult defendant in a criminal case will appear as required for trial before verdict or pending trial, the defendant may be released on personal recognizance.

(2) A failure to appear as required by personal recognizance is subject to the penalties provided in § 5-211 of this title.

(c) A defendant may not be released on personal recognizance if the defendant is charged with:

(1) a crime listed in § 5–202(d) of this title after having been convicted of a crime listed in § 5–202(d) of this title; or

(2) a crime punishable by life imprisonment without parole.