1939 Czecho-Slovak Republic Dusana guards a secret at Castle Houska, one that she and only a few servants know. Yet the rumors surrounding the ancient castle have now drawn the Nazis to Houska with plans to harness the dark and deadly power they believe dwells within its stone walls. Dusana's family has protected the castle from outsiders and kept the secret held inside for many centuries. But if Dusana is to protect the castle from evil…she may need to embrace evil herself.