Md. Rule 2-302
Rule 2-302. Pleadings Allowed
There shall be a complaint and an answer. There may be a counterclaim, a cross-claim, and a third-party complaint. There shall be an answer to any counterclaim, cross-claim, or third-party complaint. No other pleading shall be allowed except that the court may order a reply to an answer. Demurrers, pleas, and replications are abolished.