Uhhm...nice idea...let's assume for a second that Z had killed Darlene because she wanted to come out with some information. I think it is more likely that Dee had witnessed Betty Lou's murder instead of CJB's, but anyway. When Darlene had told her mother about her intentions, her killer must have gotten knowledge about these intentions somehow.
This most likely had happened just a day before her murder (or a short time before it). A killer would rather not wait a long time to make his victim silent, I guess. Thus there are two possibilities..one is that her mother had talked to someone about Darlene's plans (or someone was present when Dee and her mother had talked about it) or Dee had talked to someone else (potentially a person knowing the killer). As far as I know, Dee had talked to her mother at home. As she had talked to Pam earlier, warning about the man. According to Pam, Darlene warned that she had witnessed a murder and that the murderer had been following her. Pam suspected that Darlene may have been involved in a satanic cult. Both Pam and Linda claimed they had attended a painting party in Darlene’s home, and that they had seen an unidentified man who arrived wearing a suit. Darlene was reportedly afraid of this man and warned Pam to stay away from him because, “She said he was a bad man... She’d seen him kill somebody.”http://www.zodiackillerfacts.com/forum/ ... f=19&t=675
Some questions arise:
- Who was present when Dee had talked to her mother? (Pam)
- Who was present when Dee had warned Pam about the man? To might Pam have talked?
- To whom else may Dee have talked about her intentions?
Facing reality, the killer wasn't warned by Darlene talking to her mom (or her sister) but was already on her tracks when arriving at the painting party. It might be assumed that it was him as Darlene had told her sister that the guy had killed someone. Thus, Z was already after her when meeting her at the party. It is obvious that Z was not able to kill her during the party without having multiple witnesses. But he did kill her afterwards.
If we get that one into a focus, Z must have known some things:
1. Z did know where Darlene had been living (stalking, presents)
2. Z did know about the 'painting' party and the fact that Darlene would be there (at her home)
3. Z did know about her having witnessed his murder (of either Betty Lou and David or CJB some years earlier)
HOWEVER: There is a problem with the timeline..
12-20-1968 Jensen/Faraday homicide
05-24-1969 Painting party
07-04-1969 Ferrin homicideIF Z had wanted to kill Darlene as soon as possible (to prevent her from talking), he could have done so shortly after the painting party, e.g. on the next day. Obviously he did not. Although being at the painting party, most likely because of her, he had waited over a month (!) before killing her.
That is, what I say, weird. If Z had known Darlene, he did not kill her although he might have known that she had witnessed him murdering somebody.
He therefore either was at the party accidentially (I don't think so) or it was only later that he had known about Darlene having some information about him being a killer. But then again: Why was he at the party?? It simply doesn't match..
What is a match, however, is that he potentially had made various presents to Darlene and stalked her since he had known about her knowledge. Darlene either didn't enjoy that or (bad version) even black-mailed him with the information she actually had. Z couldn't stand such situation any longer, Darlene then even talks about going to inform the media and - BANG goes the shot.
We should be aware that he did so only after Darlene had talked to her mother, not earlier. From that day on, her killer had seen no other choice except to make her silent. All this after 'waiting' for over a month since the painting party, if not years (in case of Darlene witnessing the murder of CJB).
My conclusion is that either Darlene, her mom, her dad or Pam had talked to at least one person knowing Z or even Z himself.
One might further conclude that those two persons must have met in a timeframe approximately 24 hours before the murder. To be precise such a meeting must have happened between the time of Darlene talking to her mother about her intentions and the homicide of Darlene Ferrin itself. Some people might have talked about Darlene's intentions:
a.) If Darlene had talked to Z about she must have either been crazy or simply black-mailing him.
b.) Pam had known about him being a killer, thus nothing new about that from her side, except that she might have talked directly to Z informing him about what Darlene had said.
c.) Darlene's mother had little if any ties at all to Darlene's stalker, except she had known him as a lover?
d.) Mike Mageau appears to have no idea about the guy who had stalked Darlene.
e.) Painting party guests talking about Darlene's intentions may be ruled out as a releasing cause as the party had happened weeks earlier.
f.) Dad theory: What if Darlene's dad had learned about Darlene's intentions from her mother and then took her stalker to task? He also would have known about that one..
Darlene black-mailing a known killer? That girls must have had guts.
Pam talking to her sister's stalker? Not very likely either.
Darlene's mother having a relationship with Z? Nice idea but then Darlene would have known about, I guess.
Mike Mageau not telling the truth? Why should he, if being shot by such a guy.
Dad not talking about his spare time shortly before his daughter's murder? Not so likely either.
All of this appears to be nonsense. What I try to figure out, however, is the way of communication the causing moment had made. The one that made Z make his decision to kill Darlene NOW. To follow her and shoot both of them as hard as he could. Not to forget: He could have killed her earlier (if being the stalker and/or the painting party guest), but he did not. The causing moment, for 99.9%, was the information that Darlene had the INTENTION to publish information abouth the homicide she had witnessed.
The central question is: How did that information get to Zodiac, if not by Darlene herself.
My best guess is that Darlene had talked to someone about her intentions and that this person was either Z himself (black-mailing theory) or someone who actually had known/informed Z about her intentions. It therefore might be very useful to figure out, if possible, what Darlene had done between talking to her mother about her intentions to make all this public and her murder itself.