I
do not believe the women were selected and followed for any lengthy
time period. I do not think the victims mattered as much as what "they"
represented to this individual. It is more likely to me that the
murderer drank in the same bars, walked the same streets, probably
nightly, and took opportunities for attack as he found them. These women
were in horrible living conditions in the most feared and dangerous
place in London at the time. It is unfortunate that they crossed paths
with this murder in their effort to survive.

The following is my assessment of the offender characteristics most
likely present in this case. This was a white heterosexual male age
20-30 who lived alone and answered to no one regarding his living
habits. In at least one of the murders, Martha Tabram, the first victim,
he would most likely have been covered in blood as it appears from the
autopsy report interpretation he did face her during the attack. This may have prompted him to alter his method of
operation or M.O., which is common, as the killer learns during the
progression of serial murder. All of his other victims appeared to be
lying supine at the time of the attacks with severe neck injuries that
would have rendered them unconscious and dead within moments, thus
limiting his exposure to blood spurting and spatter.
I also think he stored and possibly cannibalized organs and tissue he
took as "trophies" from several of the victims. This would necessitate
his need for isolation and privacy. I strongly believe he lived and
worked possibly at the same place as a tradesman within the square-mile
in which these murders took place. He knew the streets very well. I
would assume that he would appear to others, particularly women, as
quiet, ineffectual and nonthreatening. He most likely used drinking to
embolden himself for the minimum amount of interaction he needed to have
his victims lead him to their demise or employed his blitz style attack
on women he found alone.
The exception to this was the last victim Mary Jane Kelly who interacted
with him enough to go through her usual preparations for her trade. Her
clothes were found folded by the fire and she had apparently gotten
into bed wearing minimal clothing. I think when she initiated the
encounter he attacked. This could also be evidence of evolving M.O.
where he finally had the time he "needed" with this victim. Her
condition when found reflected this only too horrifically.
These murders reveal a killer who desired power and control over his
victims. He most likely did not have a lasting relationship with a woman
and engaged in prostitution well before the killings began. His disgust
with himself, his adolescent curiosity of the female body, and his
hunger for domination together resulted in quite a rare type of lust
killer.