BEAST WITHIN is an interesting and unusual twist on 'normal' shapeshifter themes. The plot was fascinating and different, but Mima did a great job of making her fantasy world real and believable. The flow of the story is just quick enough to keep you reading without being too fast for comfort. The characters are intriguing, especially the shapeshifters as Mima has created a new 'species' and does a great job of explaining their quirks and customs. The story has both a futuristic and sci-fi feel to it, so should appeal to readers who do not typically read just paranormals. The sex scenes are explicit and include ménage, toys, light bondage and anal sex. The romance is terrific and both partners must learn to deal with differences because of their interspecies relationship. BEAST WITHIN is touted as book one in a series and I certainly hope Mima continues as I would love to visit this world again!