Just my theory.

[Callmebill]

I think JTR wasn't one man, but two. A killing team. Two males competing with each other.
Apparently, the team breaks up when one of them goes too far -even for them.
Wouldn't Mary Kelly be such a victim?

[Abby Normal]

I think JTR wasn't one man, but two. A killing team. Two males competing with each other.
Apparently, the team breaks up when one of them goes too far -even for them.
Wouldn't Mary Kelly be such a victim?

Nah. post mortem mutilator types always work alone.

[c.d.]

I think JTR wasn't one man, but two. A killing team. Two males competing with each other.
Apparently, the team breaks up when one of them goes too far -even for them.
Wouldn't Mary Kelly be such a victim?

Hard to believe that two incredibly sick individuals managed to find each other in the small area of Whitechapel. We would have to believe that neither one of them had any qualms over what was done to Kate Eddowes but that somehow what was done to Kelly was somehow over the line.

c.d.

[GUT]

And neither was emoted by aoardon and reward.

[Harry D]

If they weren't the same man, there may have been a 'competitive' element between JTR & the Thames Torso Killer. After months of inactivity in both series, Elizabeth Jackson's torso was recovered in June 1889 and Alice McKenzie was killed a month later. Little coincidental, don't you think?

[Abby Normal]

If they weren't the same man, there may have been a 'competitive' element between JTR & the Thames Torso Killer. After months of inactivity in both series, Elizabeth Jackson's torso was recovered in June 1889 and Alice McKenzie was killed a month later. Little coincidental, don't you think?

Perhaps. What I find extremely interesting is that both series end at roughly the same time with McKenzie and pinchin torso.

[jerryd]

Perhaps. What I find extremely interesting is that both series end at roughly the same time with McKenzie and pinchin torso.

Add to that the Cleveland Street Scandal ended at this time as well. Charles Hammond flees the country in early July 1889 and Lord Arthur Somerset in September 1889.

[Abby Normal]

Add to that the Cleveland Street Scandal ended at this time as well. Charles Hammond flees the country in early July 1889 and Lord Arthur Somerset in September 1889.

No comprende

[jerryd]

No comprende

I agree with you that both series seeming to end at McKenzie and the Pinchin Torso is interesting. The Cleveland Street Scandal came to an end at roughly the same time when Hammond and Somerset fled the country. They were in eminent danger of arrest for their involvement in the scandal. These 3 series of crimes ending at approximately the same time is interesting to me.

[Callmebill]

Other killing teams have found their destiny in each others warped behaviour. That wasn't my suggestion, BTW, Re: giving up because one of the killers has gone too far. That was a quote from a phychologist studying serial killers/teams. Some are male/female, the most violent are competitive male teams.
Going too far? Maybe one of the pairing knew or had affection for Mary Kelly.
Could these two killers have met in Whitchapel? Why not? Other teams have found each other.

[Callmebill]

Seeing double.

If JTR were two killers it would explain the escalation in violence and the decline in viciousness/murder rate. One works as a distraction/look-out the other uses his blade.
Didn't Halse see two men walking in the area who gave a 'good account of themselves'?
A man asked a night-watchmen, at the Eddowes slaying, if he'd seen couple at 1.30 am.
Would killers act differently because of a century's distance?
Between 10 to 28 percent hunt in pairs. The serial killer files. Schechter.
Here's an interesting quote from McCrary:
Predators like Bernardo often have an acute ability to detect potential co-conspirators. There’s radar, gaydar, and maybe, mur-dar, It resembles the phenomenon wherein normal people meet and decide that they’re going to get along, but with these couples, it takes a dark turn. They vector in on each other, sensing the excitement of a kindred spirit. It becomes electric. Gregg McCrary, a behavioural criminologist and former FBI agent who worked on the investigation of Bernardo and Homolka.

[Sam Flynn]

If JTR were two killers it would explain the escalation in violence and the decline in viciousness/murder rate

If Jack had had an accomplice making sure the coast was clear, we might have expected "maximum violence" from day one. Also, look at the murder sites - what advantage would a look-out/distraction really have brought to the party?

Which end of Buck's Row would the look-out have to watch? Apart from the back-yard of #29 being a dead-end, Mrs Long didn't report seeing anyone else in Hanbury Street when she saw Annie Chapman and Mr Shabby-Genteel. Mitre Square had three exits, so which one was the "sentry" supposed to cover? At Miller's Court, if "Mr Wideawake" truly was a look-out, he'd have to have run into Miller's Court (like 29 Hanbury St, another dead-end) to tell his partner-in-crime if someone was coming, and they'd both have had to escape via the single exit that led to Dorset Street.

[Callmebill]

If Jack had had an accomplice making sure the coast was clear, we might have expected "maximum violence" from day one. Also, look at the murder sites - what advantage would a look-out/distraction really have brought to the party?

Which end of Buck's Row would the look-out have to watch? Apart from the back-yard of #29 being a dead-end, Mrs Long didn't report seeing anyone else in Hanbury Street when she saw Annie Chapman and Mr Shabby-Genteel. Mitre Square had three exits, so which one was the "sentry" supposed to cover? At Miller's Court, if "Mr Wideawake" truly was a look-out, he'd have to have run into Miller's Court (like 29 Hanbury St, another dead-end) to tell his partner-in-crime if someone was coming, and they'd both have had to escape via the single exit that led to Dorset Street.

Maybe, but that assumes they weren't acting independently until their 'marriage'. Does a killer come fully formed or does he build to the great events by sharp practise?
There was someone lurking about Miller's Court though, and indeed a dead end, right outside Mary Kelly's window, if one account is to be believed -- Hutchinson.

[Harry D]

Multiplying the number of killers on-site also complicates the fact that no one ever saw or heard anything.

[c.d.]

So what exactly is in it for the look-out? It is not like a robbery where he gets a share of the loot. If he was of the same sick mind set as his partner I would have to imagine that it would have been quite frustrating for him to be on the outside looking in imagining what his partner was doing.

There is also the offer of a reward. A great amount of money and a very real inducement to rat out your partner. Yet nothing came of it.

And finally, if we want to go down this road could we make a case for three people involved or four or more for that matter? Seems like we are opening a can of worms to me.

c.d.