Daniel is an assistant professor at the School of Government, specializing in criminal law, procedure, and evidence. Spiegel serves as a criminal law expert and teaches and consults with court actors on criminal justice issues, with an emphasis on public defense. Previously, he practiced criminal law in North Carolina for 13 years, serving as an assistant public defender in Mecklenburg and Hoke Counties, assistant appellate defender statewide, and assistant district attorney and policy counsel in Durham County. Daniel earned his J.D. cum laude from Harvard University.