http://www.birminghammail.net/news/top-stories/2012/05/08/birmingham-author-claims-jack-the-ripper-was-a-woman-97319-30919572/

An interesting theory. While serial killers are overwhelmingly male, it's not unknown for a woman to become one. I may have a look at the book.

recommendation : http://www.casebook.org/index.html

Perhaps the most logical explanation for the complete failure to find even the faintest trace of evidence that connects any suspect to the crimes is that they refused to acknowledge the most concrete evidence they had. That does make a lot of sense to me.

This is one serial killer that I know of that is a woman, Aileen Wuornos.
http://www.youtube.com/watch?v=eFelaUkvNwI

Incoming bad Hollywood movie based on this theory.

There are quite a few theories that say women are a lot more criminally active than official numbers show, but they simply get cought less often, due to being more careful. And because investigation hardly ever target women in the first place.

This is mirrored with adultery cases. Both gender are equally unfaithful, but men get cought more often.

Didn't they already do "Serial Mom" years ago? ;)

IMHO, Alan Moore's From Hell is the best, one of the most thoroughly researched, and most plausible explanation for Jack the Ripper.

Reminds me of a french joke...

Comment apelle-t-on un Tueur dans un Champs de ble ?
-Un Cereal Killer.

Sorry if you don't understand, It's a play on words : Cereal/ Serial

While I agree that it is fascinating simply because it was so meticulously researched, I thought Moore himself admitted in his research notes that he didn't actually believe in that theory and just thought it made a better story by taking some liberties.

I swear I've seen this same thread over on the Battlelog forums. No-one will ever know the full story.

Well, while Moore obviously took a lot of creative liberties for the sake of narrative and just telling a good yarn, the overarching way that he approaches the story of Gull and the likely political reasons behind what he does is the most plausible explanation that fits the known facts of the case. The other stuff (e.g the Masonic backstory)...well, historically who knows, but it's a haunting story nevertheless.

The ones that are caught are overwhelmingly male. Women tend to engage in things like "mercy killings" via subtle medical mistake and other methods that are less likely to lead anybody to suspect that there's a serial killer on the loose. I think a while back somebody suggested that there in fact was no Jack the Ripper that the crimes were in fact most likely committed by different people and that there was no one serial killer running amok at that time.

Which would explain why they never found anybody as anybody they might have suspected would likely have an alibi to cover at least one of the murders/

Serial killers are overwhelmingly and predominantly male. I didn't say there weren't female serial killers. There most certainly are. But if you're suggesting there are as many female serial killers as male, and it's just that they haven't been caught, that's beyond ridiculous.