I find Ghouls super cool, they're also a form of Jinn (evil genie!) and are kinda enhanced zombies. Skinwalkers less so although their original way of being killed (say their true name and three days later they will drop dead)is pretty interesting. Oh! Also a Ghoul has always been a demon and a Skinwalker was once a person.

*ahem*

Creepy! And yes, poor Sammy! Losing so much blood, he looked about ready to collapse at the end there! *hugs*