Maryland Code, Courts and Judicial Proceedings § 3-1404

A release by the injured person of one joint tort-feasor, whether before or after judgment, does not discharge the other tort-feasors unless the release so provides, but it reduces the claim against the other tort-feasors in the amount of the consideration paid for the release or in any amount or proportion by which the release provides that the total claim shall be reduced, if greater than the consideration paid.