Context:

Described as 'perhaps the single most notorious book ever written about Jack the Ripper,' presenting the royal conspiracy theory involving Prince Albert Victor, Walter Sickert, and Freemason murders.

Context:

Holland describes this as a 'very notorious' and 'mad' book about Jack the Ripper that proposes a theory about a member of the royal family being involved with various masons. He says 'any book with the word final solution in the title is probably best left alone.'