Oh, didn't realize it's a czech game. I can speak czech better than english…
I've browsed through their czech-language site and found one english post from the authors:

Martin Kovář (kovar@cinemax.cz) - 31.5.2010, 13:34
re: The English version of Inquisitor
Hi to everyone interested in the English version of Inquisitor.

The ingame text is translated and we are currently working on its implementation. But since we have so little time, it's hard to say for now when the English version will be released. We'll let you know more in time.