I have been thinking of my own theory regarding jack the ripper murder cases. Since that I find that these cases could sometime trigger the feeling of curiosity that lay dormant within me (detective Conan).from my background reading, most of the suspect back then, I would say they were all bind to all that has tendency in doing something like so (killing people) or that have a record in doing so (got thing to settle with prostitute). For example, James Kelly, George chapman, Aaron Kaminski and other that lined up after them. Like what I said, we take James Kelly for an example, we could see same pattern being used, and for example, James Kelly’s motive is where he found out that his wife is prostitute, then certain investigator said that James Kelly has a knife skill that he possesses when he work as upholsterer which then he could use to slew all his victim (including the conical five cases).  

This one is another interesting matter that I found in the internet not too long ago as that time in search for the defense attorney in the class. Here is some bibliography on her; Trow was born in Ferndale, Rhondda Cynon Taff, Wales. He went to Warwick School from 1961 to 1968. In 1968 he went to King's College, London, to read history. After graduation he spent a year at Jesus. In 1973 he married and in 1976 moved to the Isle of Wight where he works as a teacher of History and Politics at Ryde High School. Trow is a member of the Society of Authors and of the Crime Writers' Association. He has worked at Ryde High School for many years and is a well-known teacher and historian, and his old classroom has been renamed the 'Trow Suite' in honor of his teaching career at the school.

Trow is also known in some circles for his work in theatre and dramas, organizing and participating in many performances. He is known keenly for his impressions, dry wit and takes any chance to make fun of the French. He also jokes about the Welsh, despite being born in Wales.

Mei Trow used modern police forensic techniques, including psychological and geographical profiling, to identify Robert Mann, a morgue attendant, as the killer. His theory, the result of two years intensive research, is explored in a Discovery Channel documentary, Jack the Ripper: Killer Revealed.

Trow's research is rooted in information from a 1988 FBI examination of the Ripper case, which had worked up a comprehensive criminal personality profile. The portrait drawn up of Jack was as a white male from the lower social classes, most likely the product of a broken home.

It was also thought he would have had a menial job but with some anatomical knowledge, something like a butcher, mortuary or medical examiner's assistant or hospital attendant.