Jack the Ripper

[PathOS]

When I first saw the note I thought he was just drawing distinctions with how Jack the Ripper was eventually caught for his crimes with how he himself could possibly be caught, when thinking about how the Ministry is sending Professor A. and how he needs take care and to "entertain" him and his presence despite his first instinct to kill him straight away, which would invite just more scrutiny from the government.

But yeah, then he mentions "Jack and his sons". Though I first thought he was referring to more manpigs, since he referred to "bringing them toys".