If you thought that only comic book giants like Marvel and DC built shared universes for their galaxy of heroes, think again. Over the course of his multi-decade career as America’s Favorite Boogeyman, author Stephen King has carefully constructed one of the most elaborate fictional universes around. How elaborate? Let’s just say that it takes an entire flowchart to understand it all.
Did Mad Men’s swan song live up to the hype? Did Glee end on a high note? With the year in TV nearly in the books, we’re looking back on 2015′s most notable TV series finales and giving each a letter grade, based on how well they wrapped up the show. Read on to see which series enders made the grade, from best to worst.