If Jack were alive today...

[Ginger]

Had a string of serial killings been ongoing for the past 125 years, I'd have to think the suspect pool would be rather small by now.

[Barnaby]

Had a string of serial killings been ongoing for the past 125 years, I'd have to think the suspect pool would be rather small by now.

True, but there could be some Robert Bloch Yours Truly ritualistic slayings to maintain eternal youth black magic going on, in which case the killer could be anyone.

[John Wheat]

However, as someone pointed out, JtR would be mobile (car). His victims would also be more mobile. They would also have access to certain defenses such as pepper spray, cell ohones, possibly even firearms.

I don't think many prostitutes carry firearms. There still a comparatively easy target for modern day serial killers.

Cheers John