The British diplomat, Sir Benjamin Bathurst, walked around his horses and simply disappeared. A convict named Diderici faded from existence while exercising in a prison yard. An entire Roman Legion marched into nowhere and was never seen again. Where did they go to? Einstein calculated that Black Holes in the depths of space could function as doorways to parallel realities. But if such realities exist, they're not light years distant. They're as close as the tip of your nose. And it looks like they can suck you in.