Md. Code, Criminal Law § 9–403

(a) A person may not willfully harbor an incarcerated individual, who was imprisoned for a felony and who escaped from the custody of the Division of Correction or other correctional unit to which the incarcerated individual has been committed, after:

(1) being notified, or otherwise knowing, that the incarcerated individual escaped; and

(2) being notified that harboring the incarcerated individual is a crime.

(b) A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 1 year or a fine not exceeding $1,000 or both.