A six million dollar investigation into the possibility of Walter Sickert being Jack the Ripper? And what a load of drivel it was. Patricia Cornwell as the "Stalker" would have been better advised to spending her money elsewhere.
Her total evidence boiled down to paintings composed at least 10 years after the murders. She never once studied the police reports of the day (including the Camden Town Murders), the topography, other alternatives, even less the movements of the accused. Had she investigated the latter, she would have discovered that between 1885 and 1905 Walter Sickert was working and living in Dieppe and Venice. Admittedly he may have visited London to messily slaughter a few street girls, I really don't know, and the intrepid stalker did nothing to find out about such "visits".
Her so-called DNA "evidence" was flawed and proved nothing, and her number one suspect was not impotent, indeed probably sired several children.
Walter Sickert would have been 28 years old at the time of the Ripper murders and lived to a ripe old age of 82. Considering that serial killers usually continue their hobbies until either caught or dead, Mr Sickert must have been remarkably reserved in later years. As for her remarks on seeing him give a sidelong glance on an old movie, and coming to the conclusion that he exudes evil was shameful in the extreme, particularly as he couldn't answer for himself.
If this whole fiasco is her idea of an investigation it's little wonder that she turned from crime fact to crime fiction. Her final determinations on Jack the Ripper are most certainly the latter.
Of all the Ripper theories bandied about, this one must be the daftest of all, and must be placed at the bottom of the list.