Here is part of a post I posted last night that is my take on that question :
I still believe the killer is a stalker, a psychopathic stalker, and that there IS some kind of connection between Vanessa Marcotte and Karina Vetrano's case.
If it's not the same killer, then I believe that Vanessa's killer is either a Karina Vetrano killer copycat, or that the two killers are some kind of really sick
game-team-killers who planed to commit to similar murders.
I know this thoughts seems far out, so why do I believe this ?
Because IMHO it is statistically not likely that two SUCH brutal murders, two SO similar crimes happen SO few days apart, AND on top of that, both victims have SO many similarities / things in common.
Here is a copy of a Post I posted on the Karina Vetrano thread a couple of days ago:
The two victims KV and VM lived not far apart, KV in Queens and VM in New York City (VM vas just visiting her mother in Princeton, Massachusetts when she was murdered, only 2-3 hours drive from NY city) and we don't know yet where in New York City VM lived, she could, for all we know, have lived close to KV, and/or who knows if they had some social circles in common where the killer might be a part, at least in the periphery?
IF the killer is the same man in both murders, then I believe he is the kind of killer I suspect, a psychopathic sexual predator, whom in high speed is evolving into a serial killer and who sees his killings as a deadly "game", a "project" an "artwork".
And if that is the case I think it is not unlikely that he stalked both woman and eventually followed VM to Princeton, he might have gotten info about her trip to Princeton from her social media (a stalker both in real life and on the internet/social media).
Here is a copy of a post that show how much thise two victims have in common, could that really be a coincident?
Yes of course it can, but it's not very likely IMHO:
Karina Vetrano and Vanessa Marcotte have a LOT in common IMO:
Both KV and VM have:
Long brown hair
Brown eyes
athletic bodies
seem to be very petite
Italian names
Both KV and VM are:
Out jogging when murdered
Murdered within same week, Tuesday and Sunday
Murdered in broad daylight, in the afternoon
Murder scene ca 1/2 a mile from their parents homes
Left residential areas to jogg and bodies found in nature area
Both found within a few hours of their disappearance
Both raped, well, KV was gruesomely raped, both vaginal and anal (sorry to be so graphic bur we need to get ALL the facts to be able to possibly get the puzzle together)
(we still don't know for sure concerning VM, but it is indeed very likely that Vanessa was raped, or at least that, that was part of the killers plan )
Live in ca. same area Queens and NY City
Are ca. same age 30 and 27
Stunning beauties.
No boyfriends
Successful young woman
Athletic girls
Cause of death: KV strangulation... VM, still pending, but due to apparently no blood at the crime scene strangulations is a probable
cause of death.