From the Usenet newsgroup alt.assassination.jfk comes a thread entitled:

"Judyth and "Ferrie's Ring" -- an example of "cold reading"

Hmmm ... "The Ring" ... "cold reading" .... Where exactly was Kenton Knepper on the afternoon of November 22, 1963? LOL

On a more serious note, though, I'm reminded by this of my ambivalence regarding the propriety of one element relating to the effect "Protocol 153.51". While initially I enjoyed the storyline -- it involves the assassination of President Kennedy -- surrounding the effect, later I felt that it might have been inappropriate to make an actual murder a component of a magic trick.
Similarly, I find magic/mentalism effects dealing with Jack the Ripper and/or other actual crimes or criminals to be in horrendously bad taste. Far better, in my view, to use invented names and events, as the proprietors of Outlaw Effects are said to have so admirably done.