Twin Evils? is a short Young Adult novella that has elements of fairy tale (the twins who are complete opposites of each other), paranormal, sibling rivalry taken to extremes, discusses friendship and has some element of the paranormal. I'm the author and I like it, of course, but I think it's an entertaining read.
I have written a post in my blog as introduction and has a taster or the book and also link to previous book with the beginning of the story.
I hope you enjoy it.