Zodiac Killer - RICHARD GAIKOWSKI

RICHARD GAIKOWSKI: The Handwriting

The handwriting sample which Gaikowski reportedly produced for law enforcement investigators included the phrase "187 TR." This phrase was allegedly part of a threatening message left at the home of Pam, the sister of Zodiac victim Darlene Ferrin. Pam mentioned this threat during her appearance on The Sally Jessy Raphael Show. [Watch The Sally Jessy Raphael Show with Darlene Ferrin’s sister Pam and author Robert Graysmith.]