Ripperology is a field I stay far, far, away from, even though the case falls within my period and disciplinary remit.

Something that might give a certain perspective - insofar as it's about another case in which a man was killing prostitutes in late C19th London, but by poison - is Angus McLaren's Prescription for Murder.

I also like Judith Walkowitz's discussion in City of Dreadful Delight, but that's more about cultural impact than real crime.