Was Jack caught by London underworld?

[Pcdunn]

Anything is possible.

Yeah, could be a plausible explanation.

[Harry D]

Well, they would certainly have reason for wanting the killer off the streets, as I'm sure the heightened police presence and vigilante groups weren't doing wonders for business. That's why I believe that the Lusk letter was sent by some local crook(s) to intimidate Lusk because the vigilance committee were stepping on one too many toes. As for the criminal underworld getting to the Ripper, I think they had as much chance as the police, to be honest.

[j.r-ahde]

Hello you all!

I know this sounds like Fritz Lang's M, but:

Do you find the following reason for the end of the murders plausible:

Jack was caught by the London Underworld and vanished because of that?

All the best
Jukka