Fables from the creepy book in the attic

It's spring time, and you know what that means. It's time to do some spring cleaning. First stop, the attic. Might as well, right? This idea turns out to be a fatal idea. Inside a box labeled "grandpa's war stuff", you find an... Interesting book. It's cover is a dark purple. On the metal corner protectors you see what looks like... Human teeth. And in the very middle of the cover, there is a metal charm that looks like a three headed dog. The strange bookmark appears to be marking the first story. You reach down into the box. At this time, you realize there is a lock on it. You pick the old book up. It feels scaly in your hands. You gently feel the strange, rusty lock. "Ouch!", you whisper as the sharp edge slices you finger open. You drop the book. A drop of blood drips down into the keyhole. The book unlocks. You stare at it for a moment while sucking on your wound. You slowly pick the book up, and open to the first story...