among the assassins -- accused , convicted or would-be -- are jace alexander as lee harvey oswald , victor garber as john wilkes booth , debra monk as sara jane moore , greg germann as john hinckley , annie golden as lynette `` squeaky `` fromme -lrb- who tried to kill president ford -rrb- and terrence mann as leon czolgosz -lrb- who assassinated president mckinley -rrb- .