As from what my lecturer told me, jack the ripper was the first ever serial killer cases happened in human history in Whitechapel London, which then what made it famous. Furthermore, the mysteriously missing of culprit till today also made many parties wonder on the case. However, from so, there were many opinion and interesting responses that we could find regarding it.

In jack the ripper murder cases, I have heard many responses in their opinion on who might actually be jack the ripper himself. One of it is, it actually done by royalty which is Prince Albert (eddy) to cover up their doing at the time where the prince actually happened to have sex with one of the conical five victims that they afraid they would appear to have offspring. He also suffered syphilis which said to be affected by his illegal mate, in so made him angry and suffered a mental damage that create a reason for him to kill the prostitute. 

The Knight theory, though interesting and entertaining in its own way, has been effectively debunked by many Ripperologists. Most notable was Rumbelow's refutation in his revised edition of Jack the Ripper: The Complete Casebook where Rumbelow provides evidence that Annie lived longer than Knight claims, spent time after 1888 in workhouses, and had Alice with her through some of this time. There are no marriage or birth records listing Eddy as Annie's husband or as Alice's father. Other than that, there was never any hard evidence linking Eddy to Cleveland Street, Annie Crook, or even Walter Sickert. The lack of evidence, conspiracy theorists purport, proves the theory because all evidence was destroyed! Regardless of the legitimate criticisms, the Royal Conspiracy remains one of the most popular theories with several movies, novels, and graphic novels built around it.

In the end, it is difficult to consider Eddy a serious suspect. Although rumored, there is no concrete evidence that Eddy had mental problems (either through syphilis or any other reason), he is reported being out of the country during the murders, and no solid evidence has been produced that links Eddy to sexual relationships with either James Stephen or Annie Crook. Despite these facts, it appears likely that (outside of serious Ripper circles) the theory of Eddy's involvement in the murders in some way will never completely fade.