Insanity on Trial - S3.E6

On July 2, 1881, Charles Julius Guiteau shot and fatally wounded President James A. Garfield in the lobby of the Baltimore & Potomac train station in Washington, D.C. As sensational as the assassination itself was, Guiteau's trial lasted over three months and became a very public battle over the meaning of insanity. Was it hereditary? Did it show on a man's face?