
It has been claimed by Kathleen Johns that she received phone calls and a Halloween card (likely October 1970) from the Zodiac Killer, addressed "To the woman in the blue station wagon". This greeting card may have been simultaneously mailed with the Halloween card to Paul Avery on October 27th 1970, so it would be interesting to search for correlations between the 10/27/70 Halloween card and the abduction of Kathleen Johns. If the two Halloween cards were mailed by the Zodiac Killer around the same timeframe, then the inclusion of "by fire" alongside "To the woman in the blue station wagon" would leave little doubt that the two are connected. Traveling clockwise around the 10/27/70 Halloween card, the Zodiac Killer presented the weapons he used in the correct order of their appearance up to March 23rd 1970 - By Gun, By Rope, By Knife and By Fire. The young woman apparently forwarded this card she received to newspaper reporter Paul Avery, but like everything else in the Zodiac case it disappeared into the ether (assuming her story is true). It has been claimed that if the Zodiac was responsible for the mailing of a Halloween card to Kathleen Johns, then he was responsible for her abduction, because no mention of her driving a blue station wagon was published in the newspapers. Without trawling the entire newspaper collection from 1970, I cannot verify this detail one way or another.
As has already been suggested, the Zodiac Killer (or her abductor) would have had ample time to rummage through her vehicle after her ordeal was over and search for any letters or documents that contained her address and telephone details. Having deposited his fingerprints all over her vehicle, this may explain why he thought it easier to torch her 1957 Chevrolet, and why he returned to her vehicle after the 2-hour abduction - to gather information for his future correspondence.
Kathleen Johns effectively contradicted herself when she named Lawrence Kane as her likely abductor that night, because he would have been 45 years of age on March 22nd 1970. She described her abductor as white, around 30 years of age, 5'9" in height, 160 lbs, dark hair, clean-cut and having the traits of a serviceman. So how can we reconcile this difference?
As has already been suggested, the Zodiac Killer (or her abductor) would have had ample time to rummage through her vehicle after her ordeal was over and search for any letters or documents that contained her address and telephone details. Having deposited his fingerprints all over her vehicle, this may explain why he thought it easier to torch her 1957 Chevrolet, and why he returned to her vehicle after the 2-hour abduction - to gather information for his future correspondence.
Kathleen Johns effectively contradicted herself when she named Lawrence Kane as her likely abductor that night, because he would have been 45 years of age on March 22nd 1970. She described her abductor as white, around 30 years of age, 5'9" in height, 160 lbs, dark hair, clean-cut and having the traits of a serviceman. So how can we reconcile this difference?

For people who still believe that the Zodiac Killer was 20-30 years of age during his attacks, while also believing that the Kathleen Johns abduction was the work of the Zodiac Killer, we have to consider the amount of time she spent in his vehicle and her detailed description regarding the interior of the vehicle. Kathleen described his car as messy and had noticed men's and children's clothing scattered about, along with books and papers, a black rubber-handled flashlight, and two colored plastic scouring pads on the console dashboard. Kathleen estimated that the smaller patterned T-shirts were designed in the age range of 8-12 years. Unless the Zodiac Killer was a traveling salesman selling children's clothing, or had borrowed the vehicle, a reasonable assumption would be that these haphazardly scattered clothes were part of a family vehicle. If Kathleen Johns upper estimate of the clothing was correct at 12 years - and a 20 to 30 year Zodiac conceived this child - he would have been approximately 8 to 18 years of age at the time (12 to 22 at the lower estimate), making the case for a Zodiac Killer of at least 30 or above more believable. If you don't accept that these clothes were necessarily the clothing of the Zodiac Killer's chidren, then an alternative explanation is necessary.
In 1972, the average age of fathers of newborns in the U.S. was 27 - so if the Zodiac was the biological father of the 12-year-old who wore the clothing present in his vehicle, then the statistical average would suggest a killer of about 39 years of age in 1970, in closer proximity to the age of Lawrence Kane (who she identified as her abductor), and very close to the average age of 40 described by three sets of eyewitnesses at Presidio Heights.
In 1972, the average age of fathers of newborns in the U.S. was 27 - so if the Zodiac was the biological father of the 12-year-old who wore the clothing present in his vehicle, then the statistical average would suggest a killer of about 39 years of age in 1970, in closer proximity to the age of Lawrence Kane (who she identified as her abductor), and very close to the average age of 40 described by three sets of eyewitnesses at Presidio Heights.

Howard Davis wrote on the old zodiackiller.com message board that "This woman felt that the PD rednecks were put off by Kathleen Johns hippy appearance and really didn't put much credence or interest in her recounting the event of that night". Was the same conclusion on the appearance of Kathleen Johns drawn by the Zodiac Killer, who paraphrased the Gilbert & Sullivan's Mikado in his communication on July 26th 1970, opening with the lines from 'As Some Day it May Happen', performed by Ko-Ko. The beginning of Act One stated "As some day it may hapen that a victom must be found. I've got a little list. I've got a little list, of society offenders who might well be underground, who would never be missed, who would never be missed".
Did the Zodiac Killer regard Kathleen Johns hippy tendencies as part of the counterculture or underground movement that he had on his "little list".- people that wouldn't be missed? The letter mailed only two days earlier to the San Francisco Chronicle would suggest so. He wrote on July 24th 1970, threatening "This is the Zodiac speaking. I am rather unhappy because you people will not wear some nice (Zodiac symbol inserted) buttons. So now I have a little list, starting with that woeman + her baby that I gave a rather intersting ride for a coupple howers one evening a few months back that ended in my burning her car where I found them". The phrase "I now have a little list, starting with that woeman + her baby" appeared to suggest that her escape would be short-lived and that some day it might happen. It appeared that three months later she may still have been in his sights, when she apparently received a Halloween card from her abductor at her home address. He had promised to "start" with her and he wasn't finished yet.
The 'As Some Day it May Happen' verse ended with "But it really doesn't matter whom you place upon the list, for none of them be missed, none of them be missed". Sadly, Kathleen Johns is no longer with us and deeply missed by her loved ones - but fortunately for her family and friends, it wasn't at the hand of the Zodiac Killer.
Did the Zodiac Killer regard Kathleen Johns hippy tendencies as part of the counterculture or underground movement that he had on his "little list".- people that wouldn't be missed? The letter mailed only two days earlier to the San Francisco Chronicle would suggest so. He wrote on July 24th 1970, threatening "This is the Zodiac speaking. I am rather unhappy because you people will not wear some nice (Zodiac symbol inserted) buttons. So now I have a little list, starting with that woeman + her baby that I gave a rather intersting ride for a coupple howers one evening a few months back that ended in my burning her car where I found them". The phrase "I now have a little list, starting with that woeman + her baby" appeared to suggest that her escape would be short-lived and that some day it might happen. It appeared that three months later she may still have been in his sights, when she apparently received a Halloween card from her abductor at her home address. He had promised to "start" with her and he wasn't finished yet.
The 'As Some Day it May Happen' verse ended with "But it really doesn't matter whom you place upon the list, for none of them be missed, none of them be missed". Sadly, Kathleen Johns is no longer with us and deeply missed by her loved ones - but fortunately for her family and friends, it wasn't at the hand of the Zodiac Killer.