With that said, I recently checked out Tales from the Fjeld. The tales are pretty brutal, which I like since there's this tendency to sweeten fairy tales/folklore. Not the case here. Take "The Sweetheart in the Wood." Our heroine's set to marry this dashing suitor and heads out into the woods to his home/castle for her wedding. She arrives a day early and finds the castle empty except for a room of gowns, a room of jewels, and lastly a room of rotting, bloody corpses. Yep, he's a serial killer. She ducks under the bed in time to witness the suitor return home with another potential bride...
I know, it's a cautionary tale, but it rocks some vengeance and who doesn't enjoy a little revenge in a story. Happy reading and writing.