A drug dealer who sold a fatal dose of MDMA laced with fentanyl to a Dallas woman in December of 2024 has become the first person in Dallas County to be convicted of murder under Texas’s fentanyl statute. The conviction comes after a long investigation by the Dallas Police Department (DPD), an investigation built largely on text messages and forensic toxicology work by a veteran narcotics detective. Destin Scott, 29, pleaded guilty on June 10 an…