Back in 1996, Crucible Design published a game about psychics and psychic powers called The 23rd Letter. I was looking through my collection recently and came across it (in fact, the second revised edition, from 1997, is the one I have).
Crucible Design was the first and only RPG game company from Northern Ireland that I had ever heard of and their games have now transitioned to author Matt Johnston's blog Late Gaming.
Looking around the net, RPG.net has a sole review on it and a few other bits (1, 2, 3) and there is precious little elsewhere. Looking through Matt's Blog, there are about 10 posts (from 25 Feb 2008 to 8 Nov 2008) that include some really good content for the game. His blog has a bunch of other stuff, including a pretty cool Narnia/WWII crossover blurb.
(I wrote several questions to Matt about his games and Crucible Design, it's past and present, and he was kind enough to answer. I will post our discussion in Part 2.)
If I recall correctly, I heard about it sometime around 1998 (probably by reading that sole review on RPG.net) and managed to find a copy at a game shop when I visited by sister in D.C. around 2001. At $16.99 (I think it was in the sale bin so I probably paid much less than that) and 72 pages, it wasn't a big purchase. I believe I looked through it briefly and stuck it in my miscellaneous games box.
Now, nearly a decade later, I found it and decided to take a read. Maybe I'll even run a game.