Md. Code, Criminal Law § 3–313

(a) On conviction of a violation of § 3–304, § 3–307, or § 3–310 of this subtitle, a person is subject to imprisonment not exceeding life if the person has been convicted on a prior occasion not arising from the same incident:

(1) of any violation of § 3–303 or § 3–304 of this subtitle, or § 3–305 or § 3–306 of this subtitle as the sections existed before October 1, 2017; or

(2) in another state or in a federal, military, or Native American tribal court of a crime that, if committed in this State, would constitute a violation of § 3–303or § 3–304 of this subtitle, or § 3–305 or § 3–306 of this subtitle as the sections existed before October 1, 2017.

(b) If the State intends to proceed against a person under this section, it shall comply with the procedures set forth in the Maryland Rules for the indictment and trial of a subsequent offender.