One has to be careful not to get caught up and swayed by all the conspiracy theories surrounding the JTR story.
However, it is true that pathologically
driven killers are unlikely to simply cease.
I am pretty certain that the evidence that the killer was indeed Prince Albert Victor is quite strong. Particlarly since the cessation of killings coincided with him being admitted to a mental hospital amidst huge secrecy. A core member of the Royal Family suffering from (allegedly) syphilis induced madness would have seriously shook the British monarchy in those days. And it is highly unlikely he would have caught syphilis from fraternizing with any ladies of the aristocracy (even though most of them were/are as ugly as a moose
He was never heard of again and it is said he died in the mental home.
Yep. My money is on "Saucy Jack" being Prince Albert.