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As to #2, this has Kercher making her way downstairs after she's been attacked and for some reason returning to her bedroom. Maybe I guess. Guede is threatening her with a knife and she complies, thus no signs of a struggle? Still this is also a permutation of the police malfeasance option since they had to deny that it was Kercher's blood or fail badly to identify the blood as Kercher's.
I think #3 just needs to be expanded to intruder got in to the bedroom and proceeded to trash it and leave blood. Conceivably the intruder had a key, the door wasn't locked or broke in using a non destructive method. So Guede made his way downstairs after the murder. This one seems plausible. What's wrong with this except that it requires some kind of police malfeasance for which there doesn't seem to be a motive to cover it up. Is there a problem with blood drops leaving the down stairs unit for their case against AK/RS?
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Hey, I try. Not all of us have our own private vault of Kercher murder information.
FWIW, I considered that you meant Kercher, but it seemed to require a trip downstairs after an initial attack and then a trip upstairs where she was mortally wounded.
Hmm, maybe your were implying that she was initially attacked downstairs? Regardless wouldn't the kind of wounds she sustained have been bleeding so badly that whichever wound came first, the walk upstairs, if it were possible at all, would have left a serious trail of blood. Were there any incidental wounds that might have bled slowly enough for this theory to be plausible? And then of course, it doesn't explain why the PLE would have hidden the fact of Kercher's blood downstairs.
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I think there is some convergence here on what the
likely possibilities are for the downstairs flat crime scene.
To clear up some concepts...
For #2, I don't believe anyone has proposed that Meredith went downstairs
after she was attacked. She would have been too badly wounded.
Some of us have speculated that Meredith had gone downstairs
before she was attacked, to water the pot plants and/or check on the famous injured cat. Some have also, I believe, speculated that she was
initially attacked in the downstairs flat and then forced (or fled and was followed by her attacker) to the upstairs. I don't believe either of these scenarios are highly probable, based on the evidence of what she was wearing when attacked and the lack of any clear evidence of a struggle outside of her bedroom upstairs. The scenario in which she comes home to the upstairs flat and is attacked soon after she enters her bedroom by an intruder (Guede, who had been in the larger bathroom, apparently not visible on entry) seems simpler and fully consistent with the available evidence.
For #3, the point is indeed that Guede would have gone downstairs to recover after he had fatally wounded and raped Meredith. In this scenario, it's assumed he either used the key she had for the downstairs, or somehow had another key. The police, who at first had made the finding out what had happened downstairs a priority (the DNA samples from downstairs were, according to available police records, among the first to be tested), decided to eliminate consideration of the downstairs as a crime scene. They did this by assigning, arbitrarily, all the bloodstains there to the cat with the injured blood. There is, however, no indication in the police records of any species-specific test (it would be an antigen-antibody test) to verify that the blood was from a cat. The approximately rectangular stain on the bed is, to me, totally improbable as a blood drip from a cat or a person; it appears to be the pattern left by part of an approximately rectangular object, such as the handle of a bloody knife. (There was a somewhat similar bloodstain on Meredith's bed, which has been attributed to the murder knife.) Human DNA profiles were obtained from a number of the downstairs bloodstains, but not revealed by the police. The DNA profiles must be human because of the primate-specific enzyme used in the DNA replication (PCR). The DNA must have been in the bloodstain itself or the underlying substrate (surface) or both.
For #3, it is my assumption that the police have suppressed the truth of the downstairs crime scene, including the DNA results, to hide the fact that only Rudy Guede was involved in the murder and rape of Meredith. Finding Guede's DNA in those bloodstains (his hand was wounded by his own knife in the attack - not uncommon in knife attacks) and Meredith's would have made his involvement too clear, while leaving no room for any involvement by Amanda Knox and Raffaele Sollecito. The suppression of the downstairs evidence by the police is consistent with their suppression of evidence from upstairs, such as the identity of the donor of the putative semen stain on Meredith's pillow. This putative semen stain may be tied to the time of the attack because of the distinctive shoe print on part of it.