The same week we ran our tragic story about the Herczog family, This American Life also ran a story about a son who killed his father. He pleaded NGI (Not Guilty by reason of Insanity) like the Herczog case.
However, a judge, jury and several doctors decided he was faking and he was put in prison for ten years, until another doctor (with the same name as the first doctor) realized something was wrong.
This is an amazing podcast that you should listen to if you have any interest in the deeply complex and sometimes flawed issue of NGI trials.
Listen to it here.