Professor Johnson teaches in Georgetown's criminal clinics. She writes about policing and criminal procedure. Prior to joining Georgetown University Law Center she was a supervising attorney in the Trial Division at the Public Defender Service for the District of Columbia (PDS). At PDS Ms. Johnson was assigned to the most serious cases at the “Felony One” level, and her experience included numerous trials in D.C. Superior Court representing indigent clients facing charges including homicide, sexual assault, and armed offenses. Ms. Johnson’s responsibilities at PDS also included supervising other trial attorneys and serving as one of the agency’s two representatives to the D.C. Superior Court Sentencing Guidelines Commission. In 2009, Ms. Johnson was a Visiting Associate Professor in the Juvenile Justice Clinic at Georgetown University Law Center. Before joining PDS, Professor Johnson was an E. Barrett Prettyman fellow at Georgetown University Law Center. As a fellow she represented indigent adults in the D.C. Superior Court and supervised students in the Criminal Justice Clinic. Ms. Johnson earned her law degree from New York University Law School and she earned her B.A. in American History from the University of California, Berkeley.