Discover Alamut, Bartol Novel

Continuing the discussion from Discover Assassin's Creed series:

Alamut is a fort named after the river valley it overlooks. It is an amazing place with a fantastic history, both real and fictional.

The reason I want to know about this novel and author is because it is important to Slovene literature, is influential to the assassin myth, and yet wasn’t published in English until 2004… what?