It is my opinion that all 5 agreed upon victims were killed by the same person. The similarities between the five women’s murders are very obvious, including the throat cutting and the occasional de-bowling. Also, all five women were murdered within a few miles of one another and frequented the same areas. The differences between the murders can be explained in most cases. For example, Elizabeth Stride was not cut open because the killer was interrupted and could not finish his brutal murder. There is also progression seen in the killings, which can explain why the early murders were a bit different then the later ones. I believe the M.O. was still the same throughout all five killings. In conclusion, the ripper victims were all killed by the same person, with one distinct M.O. and a progressive pattern of killing innocent women.