In its recent opinion Rowhouses Inc. v. Smith, No. 60, Sept. Term 2015, 2016 Md. LEXIS 99 (Mar. 25, 2016), the Court of Appeals of Maryland further clarified the causation standard applicable to lead paint lawsuits in Maryland. In doing so, the court provided a roadmap to attorneys and courts for presenting, evaluating and countering circumstantial evidence in such cases.