earlier version of Pi, the original

Before the commercialised version of Pi, there was an original, set, I if I recall properly, in Jerusalem, and far more focused on the numerology surrounding the Torah than the commercialised slap against Wall Street and Chabad.  It was, in fact, even a bit darker and the protagonist is killed in the end.  I saw it in the UK on a rented CD.  I would like to find a copy online OR even to be bought through a distributor.  Can you help, please?