The Malnosso are the primary issue, yes. Their experiments are varied, and never enjoyable. You could find your body transformed, your mind twisted, your age taken from you, and any number of other unpleasantness. Then there are the times when people are taken to the Malnosso's labs for more direct experimentation... they usually return in dire need of a healer's services.

Unfortunately, even factoring the Malnosso out of the equation, there are citizens of Luceti itself who seek to cause harm to their fellow captives.