How about when the media title Frankford Slasher, together with the location of the murders, gives the game away ?
Could several people in the USA have known, all along, the identity of the Zodiac Killer ?
During 1985-1990 a series of murders were attributed to the media dubbed Frankford Slasher.
The 8 victims of the Frankford Slasher were:
Helen Patent (August 19, 1985)
Anna Carroll (January 3, 1986)
Suzanna Olszef (December 25, 1986)
Jeanne Durkin (January 8, 1987)
Catherine (Mary?) Jones (January 1987)
Margaret Vaughan (November 11, 1988)
Theresa Sciortino (January 19, 1989)
Michelle Dehner (September 6, 1990)
