This series, with all its various subplots and storylines, is presenting its finest season yet, as almost every major character is in pursuit of something difficult to obtain – whether they be leads in a journalistic investigation, collaborators in an ambitious musical project, the right costume for Mardi Gras, or the right employees for a new local restaurant. Tonight, there’s movement in all those areas – including Fats Domino, guest starring as himself, as a possible musical