now 20 years later, former fbi profiler candace delong examines the entire interview. >> he certainly has his issues mentally and psychiatrically. but he is not seriously, seriously mentally ill. >> making sense of the mind of manson. >> friday night in los angeles, a movie actress and four of her friends were murdered and the circumstances were lurid. >> the news out of los angeles, august 10th, 1969, was shocking. five people had been brutally murdered. among the dead, roman polanski's wife, sharon tate. she was eight months pregnant. >> she'd been stabbed. repeated stab wounds. one of the victims had a hood placed over his head and the word "pig" was written in blood on the door. >> but the carnage wasn't over. the following night, police found two more victims. >> leo labianca, a supermarket owner and his wife, had both been stabbed to death. repeated stab wounds. on his body the word "war" has been carved in the chest. then with blood, the killer had scrawled on the refrigerator door the words "death to pigs." hoods had been placed over the heads of both victims. >> despite the o