Md. Code Ann., Cts. & Jud. Proc. § 5-203.1
(b) If knowledge of a cause of action concerning a homicide or the identity of a person who contributed to the homicide is kept from a party by the conduct of an adverse party or an accessory or accomplice of an adverse party:
(2) A presumption shall exist that the party should have discovered by the exercise of ordinary diligence the identity of the person who contributed to the homicide after:
Added by Acts 2012, c. 239, § 1, eff. Oct. 1, 2012; Acts 2012, c. 240, § 1, eff. Oct. 1, 2012.