Well I'm gonna buy the book if I know that you have solid evidences proving that your suspect could have committed the crimes, that's all I ( and everybody having an interest in this case ) want. Yourself, as a researcher, must admit that it takes a lot more than what you might "see" in a painting to accuse anybody of being a serial killer, right ?? Therefore it would be great if you could share a little more of what you have found.
Do you have strong evidences that Van Gogh was in London at the time the murders were committed ?? That's the entire case right there, you need to prove that Van Gogh was in London when the crimes were committed.
That's all I want to know, I won't bother you again with my questions.
The answer is—Yes, I have strong evidence Van Gogh was in London at the time the murders were committed.