I'm running The Black Sepulchre and it's been a blast so far, but I have an issue wrapping my head around what exactly the Black Sepulchre is. An odd machine, built long ago, enshrined in an Imperial Cathedral….and it decodes a video when planets are properly aligned? That's pretty ridiculous. Am I missing something? Can anyone make this make sense? I'll probably skip that end scene and just give them the vid-pict, but they're gonna want to know what was under the sheet at some time.