First Zodiac killer letter in almost 3 years

KPIX-TV news footage from January 31 1974 with reporter Pat O'Brien featuring an interview with SFPD's Lieutenant Charles Ellis, who tries to specualte why the Zodiac killer has written his first letter to the authorities in almost 3 years. At present, Ellis can only point out that Zodiac states he was stimulated to do this after watching 'The Exorcist' movie, which was released in the U.S. in December 1973... Opening graphic designed by Carrie Hawks.