Salaisuuksien kirja (The Book of Secrets) is the first official supplement to the legendary Praedor roleplaying game. It dives into the occult, hidden rites of the gods, and the witchcraft cast with demons of Jaconia. Salaisuuksien kirha also unearths many secrets of Jaconia's masters, strange tricks, and abilities that may help an adventurer on both sides of the border of the World. Salaisuuksien kirja also includes four long adventures written by Praedor designer Ville "Burgeri" Vuorela, and several adventure seeds from author Erkka Leppänen. Salaisuuksien kirja is meant not only for the game masters, but for all those who are interested in Jaconia's and Borvaria's secrets. (Translated from the back of the book)