Someone has cursed them to
become a wolflike demon, and usually at the full moon. That someone's got to be really powerful, too, like a major heavyweight sorcerer or a demon lord or one of the Faerie Queens.
"When the full moon comes, they transform into a monster, go on a killing spree, and slaughter everything they come across until the moon sets or the sun rises."
A sudden little chill went over me, and I shivered.
"What else?"
"Supernatural speed and power. Supernatural ferocity. They recover from injuries almost instantly, if they become hurt at all. They're immune to poison and to any kind of sorcery that goes for their brain. Killing machines."
"Sounds great. I guess this hasn't happened all that often? I'd have heard something by now."
"Right," Bob said.
