A much stronger case could be made for the Zodiac Killer wanting to contact the Jim Dunbar Show in San Francisco just several days prior to his murder of Paul Stine in San Francisco. The Zodiac Killer had already made threats to "cruse around all weekend killing lone people in the night then move on to kill again" if his cryptograms were not published in the newspapers on August 1st 1969, and that he was not happy to see he "did not get front page coverage" for his exploits thus far. Therefore, one could argue that the Zodiac Killer had tried to contact the Jim Dunbar Show before the murder of Paul Stine to threaten the citizens of San Francisco that his terror would soon be felt on the streets of the big city. Jim Dunbar asked the "Zodiac Killer" (Sam) "Did you attempt to call this program one other time when Mr. Belli was with us?", suggesting that the Zodiac Killer had previously chosen to ring a San Francisco TV show with a resident San Francisco lawyer as guest, just a few days prior to the Zodiac Killer switching his attacks to San Francisco. The other possibility, is that a mental patient just took it upon himself to contact a San Francisco TV show in absence of any murders being committed by the Zodiac Killer in San Francisco prior to the attack in Presidio Heights.
If anybody "can help" in pinpointing the exact date that Melvin Belli appeared on the Jim Dunbar Show immediately prior to the October 22nd 1969 call, please let me know by using the Zodiac Killer forums. Thank you. PART 1.