uncovered by dateline. his obsession with actors, jody foster. the letters were sent to and the most controversial question of all, is hinckley really fit to be free? he s a potential k dangerous character. hello, welcome to dateline. he shot a president and shook the country. since that day, more than 40 years ago, gunman, john hinckley jr. has remained an enigma. now, we re about to reveal an extraordinary trove of his most private thoughts and feelings, and provide a firsthand look at his contentious second act as a free man. here s special contributor, troy roberts, with hinckley, diary of a dangerous mind. charming small town,