This is a very interesting case. There are so many strange things about it (and I'm not talking about the conspiracy stuff about Prince Albert).
There are only five murders that are officially attributed to the ripper, but there are another nine or ten that are similar and contemporary. Are they the work of the ripper? Who knows. Criminal investigators did not have the tools we do today.
There is the whole issue of the writing on the wall which may, or may not, be derogatory toward Jews (double negatives, inspectors possibly removing words etc), which are only associated with the case because the apron of one of the victims was found nearby.
And of course there are the numerous letters claiming to be from the perpetrator (one of which, the "Dear Boss" letter gave Jack his name). These really do take us into strange realms. Some are obvious hoaxes, but some are disturbingly close to the mark.
A modern geographical profile was done on the ripper case which concluded that the ripper lived within a mile of all the victims' homes.
I have read and heard many compelling cases for various suspects but there is usually some sort of flaw in each case so no one really leaps out. It is likely that the ripper will never be known. The case will, however, continue to be wonderful fodder for conspiracy theorists and writers just the same.