I learned a new term

And that term is Zvengali.
Zvengali is actually a character from a story that was a hypnotist....Which story? No clue.

I found the information towards the bottom of this page
http://www.guardian.co.tt/archives/2006-02-07/features5.html

the passage is: “Zvengali was actually a character from a novel I read once,” he explained. “He was a hypnotist, but his name eventually became an adjective for anyone with powers of persuasion.


Nevermind, i found the book.


Blurb about the book:
Svengali, the malevolent hypnotist in a sensationally successful novel published by George du Maurier in 1894, became such a well-known character in the culture of the period that his name entered the dictionary as one...