At the end of last week’s show, there was a surprise incendiary ending: The vampire clan leader was accidentally sunlit to death. Tonight’s show, written by Flight of the Conchords co-star and Shadows co-creator Jemaine Clement, is called “The Trial.” It may be devoted to the consequences of last week’s unexpected conflagration – but at any event, according to FX, promises to be loaded with surprise guest stars, who may or may not be under some of those hoods.