District of Columbia City Hall Scott Key, (1779–1843), and was sentenced to a mental institution. The building was also the site of the 1867 trial of John Surratt, an alleged conspirator in the assassination of Abraham Lincoln who was later acquitted. However, Charles J. Guiteau, the assassin of President James A. Garfield, was convicted at the courthouse in 1882. The Old City Hall was the scene of a fugitive slave trial known as the "Pearl incident," which was the largest single escape by slaves attempted in U.S. history. Two men were convicted in 1848 of attempting to free more than 70 slaves by sailing them
Charles J. Guiteau criminal psychologist Kent Kiehl diagnosed Guiteau as a psychopath, giving him a score of 37.5 out of 40 on the PCL-R scale. The life of Guiteau, focusing on his psychological disturbances and his plan to kill Garfield, is the subject of "Portrait of an Assassin", a radio play by James Agate Jr. The play was produced as Episode 1125 of CBS Radio Mystery Theater and was first broadcast on October 8, 1980. Guiteau is depicted in Stephen Sondheim and John Weidman's musical "Assassins", wherein he mentors Sara Jane Moore, a woman who attempted to assassinate Gerald Ford. Guiteau sings parts