The first major Zodiac suspect was "Andrew Todd Walker" (This name has been changed, it is the name Graysmith gave him in "Zodiac"). April, 1970 "Walker" was first brought to police attention after he had spent several weeks playing cat and mouse games in his car with a highway patrolman. "Walker" did this in a new green Ford. On one occasion, "Walker" pulled up next to the highway patrolman and stared at him with a deep hatred. He was a middle-aged man who had an enormous face and tight, thin lips. He had a high hairline with an abundant crop of graying hair. He wore dark-rimmed glasses, had a potbelly, stood about six feet tall and weighed over 200 pounds. 1971 Vallejo Sergeant Les Lundblad investigated "Walker" as on of the suspects in connection with the Darlene Ferrin murder. May, 1974 A friend of the highway partolman's indicated to him that "Walker" could be the Zodiac killer. He decided to check up on "Walker." At about the same time, anonymous threatening letters and phone calls began plaguing a school teacher in Vacaville, near Vallejo. She identified "Walker" as the man who was harassing and threatening her. A 17-page on "Walker" as a Zodiac suspect was prepared at about this time. Some of the evidence which pointed toward "Walker" included: - He was picked out by one of Darlene's friends in a series of photographs as the man harassing Darlene at the painting party and at Terry's Restaurant. Others, however, believed that "Walker" was not the same man that they had seen in these locations. - The NSA's cipher computer printout of one of Zodiac's codes claimed that words which approximated "Walker's" name appeared and were repeated several times in the cryptogram. - At the same time that Zodiac claimed he was "swamped out by the rain a while back," the area of "Walker's" house had been flooded and detectives had secured photos to prove it. - One of Zodiac's postcards had said "Peek through the pines." One of the detectives on the case told Graysmith that "Walker" lived in a house surrounded by a grove of pines in an isolated area. - On the same card, Zodiac had mentioned the Sierra Club. "Walker" was connected with the Sierra Club. - "Walker" fit the description of a stocky man seen in a General Store near Lake Berryessa at the time of the attack there. This stocky man had entered the store nervously and frantically, asking anyone for the quickest way to leave the lake. One witness at the store picked "Walker" out of a series of photographs and said that "Walker's" voice matched the man's at the lake. - By his own admission, "Walker" had spent many hours at Terry's Restaurant. This connected him with Ferrin but was of course no proof that he was the actual man harassing Darlene. - Walker was given a speeding ticket in his white Chevy at Lake Tahoe at about the same time Donna Lass had disappeared there. It is now believed that "Walker" was not the Zodiac killer, as much of the evidence garnered against him was circumstantial. His handwriting did not match that of Zodiac's and his prints did not match the prints found on Stine's cab on Oct. 11, 1969. The three teenagers who witnessed the Stine killing and observed Zodiac thought that Walker was too old and too fat.