This report offers an analysis of recorded crime incidents and arrests in Baltimore from March 2010 to March 2020, evaluating alternative explanations for change. The national dialogue on policing, which gained momentum following the 2014 protests in Ferguson, Missouri, coincided with a decline in arrests in Baltimore, especially on minor charges. No changes in crime levels resulted from these declines in arrests. After a week of unrest in Baltimore in 2015, following the death of Freddie Gray while in police custody, arrests of all types declined abruptly while crimes of all types soared during a three-month period. Following the completion of a federal investigation in 2016, the city signed a consent decree with the Department of Justice in 2017 and agreed to reform the police department under a court monitor. As of 2020, violent crime remains high, but arrests have declined in a pattern that is consistent with calls for reform. The fourth post-Gray police commissioner, who was appointed in February 2019, introduced a crime plan that appears to have reduced robberies and property crime without increasing arrests. Homicides and shootings remain far too high, on an absolute scale and relative to the baseline period from 2010 to 2014.