Zodiac DNA being worked on by SFPD & VALLEJO PD

[sandy betts]

I’ve had a bit of a think and my opinion is simply the following:

Nancy’s case and logically those committed in similar time, location and fashion are unrelated to the Zodiac by way of DNA evidence, the only saving grace is if blood found at the scene were planted by the killer or Zodiac or some other unforeseeable allowing for plausibility.

Now If the Sacramento rumor is true then from what crime or what (letter?) does this originate from?

The blood found at the Sacramento crime scene was from the killer slicing his hand while stabbing Nancy, it was not a spot of blood that was "planted" by the killer. Detectives are not stupid people, they can tell when something looks planted, or if it is left by a bleeding suspect leaving the scene.

Blood drops that are left by someone who has a deep cut on his hand, leaves spots that have what is called "fingers" , those "fingers" point in the direction the cut person is walking. That is also how they knew the killer left the same way he got in, through the sliding glass door.

[jacob]

I’ve had a bit of a think and my opinion is simply the following:

Nancy’s case and logically those committed in similar time, location and fashion are unrelated to the Zodiac by way of DNA evidence, the only saving grace is if blood found at the scene were planted by the killer or Zodiac or some other unforeseeable allowing for plausibility.

Now If the Sacramento rumor is true then from what crime or what (letter?) does this originate from?

The blood found at the Sacramento crime scene was from the killer slicing his hand while stabbing Nancy, it was not a spot of blood that was "planted" by the killer. Detectives are not stupid people, they can tell when something looks planted, or if it is left by a bleeding suspect leaving the scene.

Blood drops that are left by someone who has a deep cut on his hand, leaves spots that have what is called "fingers" , those "fingers" point in the direction the cut person is walking. That is also how they knew the killer left the same way he got in, through the sliding glass door.

I've said it before but the Bennallack case could be the key to solving this entire case. If that blood from the crime scene is Zodiac's then it's the most DNA LE have from him, by a country mile.

[jacob]

Answer from a chemist and cell biologist. https://www.quora.com/How-long-does-DNA-last-on-blood

"DNA is usually found in blood, the connective tissue, in the nuclei and mitochondria of cells. There, it is very stable and lasts the life of the cell and then some. DNA from damaged cells is rapidly degraded, as are other components of damaged cells such as proteins. I assume you are more interested in DNA from blood for forensic analysis. As cells die, they begin to degrade and release enzymes which destroy all cell components. In addition, decay from organisms such as bacteria break down DNA. If you have ever seen a molecular biology paper and noticed a DNA gel digested with EcoR1, it is a specific bacterial DNAase from E. coli. The longer DNA is exposed to this type of environment, the more it degrades. If, on the other hand, cells remain intact, at reduced temperatures or frozen, or are otherwise protected from degradation, DNA may last many years with small amounts of degradation. The interior of teeth is an example and would last much longer than blood. That said, with modern techniques like PCR, only a few cells are needed to get good sequence results. You can certainly get DNA from blood samples from crimes tens of years old, if they are stored properly. On the other hand, the Jurassic Park scenario (mosquito bites dinosaur and is trapped in amber) is much less likely to give good results."

As with the Zodiac letter envelopes, it depends on how well the Bennallack crime scene evidence has been stored.

[Xcaliber]

The textbook answer is that preservation and storage is vital -- the real life answer seems to be that DNA is a crapshoot.

[jacob]

Sure, that would be helpful to solve the Bennallack case. Same with the SR Hitchhiker. Unlikely they were Z crimes, but if you get a named suspect you never know what that could lead to. They've reportedly had DNA from the Bennallack crime though for a couple years at least.

Am I wrong or does this rule out DeAngelo for the possible Zodiac cases in Sacramento? Surely there would have been a DNA match by now.

That's a good question. If they've developed a profile from the Bennallack case, they would be able to either connect or eliminate DeAngelo.

If he was connected, there definitely would have been an announcement.

It's conceivable they have a profile, that DeAngelo didn't match it, and that so far they've come up empty in matching it to anyone, period.

My guess though is they don't have a profile.

Regarding my own question, the Sacramento cases were before DeAngelo started (as far as we know) as the Visilia Ransacker. So he would have committed these home invasion murders (without raping victims), then progressed to simply burglarizing homes, then committing home invasions to rape victims, then once again home invasions with murder and also rape. Which all seems unusual.

[Sdur12494]

I didn't attack you, I just asked about it. And if you look back through that thread, I told you from the start you might have been mistaken and your grandfather might have just been interested in the Zodiac case.[/quote]

I remember that. You were obviously right and yes it was my fault thinking otherwise. I'd like to try to be as involved as possible on this forum if that's ok with everyone. I've seen people talking about a Sacramento case? Any more info on that?

[sandy betts]

I didn't attack you, I just asked about it. And if you look back through that thread, I told you from the start you might have been mistaken and your grandfather might have just been interested in the Zodiac case.

I remember that. You were obviously right and yes it was my fault thinking otherwise. I'd like to try to be as involved as possible on this forum if that's ok with everyone. I've seen people talking about a Sacramento case? Any more info on that?[/quote]


Sdur12494
Answer to your question, as far as I know there is no new information about the Sacramento case as of yet.
Personally , I believe that Zodiac did have some interest in that area, because of the DMV letter possibly being written by Zodiac and other murders in or near that area.

None of those murders were like DeAngelo's MO, for those who are thinking it could have been him.

We still don't know everything about the Zodiac's MO , because he changed it so often to confuse the police, is what I am guessing? ( He seemed to be fulfilling his sick fantasies) When just shooting people no longer gave him satisfaction , he started using a knife again. I say again, because I have my own reason to believe he killed Cheri Jo Bates. August of 1969 Manson stole some of Zodiac's thunder , Zodiac wanted to do something more that would shock people, like what he did at Lake Berryessa.

[CuriousCat]

I remember that. You were obviously right and yes it was my fault thinking otherwise. I'd like to try to be as involved as possible on this forum if that's ok with everyone.

Sure, no problem man. Zodiac is a rabbit hole that will suck you in and keep you guessing. Sounds like it did it to your grandpa and it's getting you to. That just shows how long this has been going on. Welcome to the club. The more people looking and asking questions the better. Hopefully something one of us turns up helps find the SOB who did this.

I've seen people talking about a Sacramento case? Any more info on that?

Nah, we don't even know if the rumor about Sacramento has any truth to it. I mean, we know they had blood evidence but we don't know if it actually has anything to do with Zodiac. Like Sandy though, many of us have long suspected Zodiac killed more than the 4 known attacks and the Sacramento cases have long been suspected of being the work of Zodiac, so it makes sense in those terms that the rumors have some truth to them.

[Shawn]

Nah, we don't even know if the rumor about Sacramento has any truth to it. I mean, we know they had blood evidence but we don't know if it actually has anything to do with Zodiac. Like Sandy though, many of us have long suspected Zodiac killed more than the 4 known attacks and the Sacramento cases have long been suspected of being the work of Zodiac, so it makes sense in those terms that the rumors have some truth to them.

Per news report...

'The suspect cut himself during the assault, Links said. Deputies have a DNA profile on the person who killed Bennallack and the DNA has been in the state and national databases for years."

https://www.kcra.com/article/47-years-l ... d/14767070

[jacob]

Nah, we don't even know if the rumor about Sacramento has any truth to it. I mean, we know they had blood evidence but we don't know if it actually has anything to do with Zodiac. Like Sandy though, many of us have long suspected Zodiac killed more than the 4 known attacks and the Sacramento cases have long been suspected of being the work of Zodiac, so it makes sense in those terms that the rumors have some truth to them.

Per news report...

'The suspect cut himself during the assault, Links said. Deputies have a DNA profile on the person who killed Bennallack and the DNA has been in the state and national databases for years."

https://www.kcra.com/article/47-years-l ... d/14767070

Surely they must have thought of putting the blood DNA through GEDmatch to go for the DeAngelo capture method.

I don't want to insult LE intelligence by suggesting they didn't start that process a while ago.