List of the best Castle episodes, as determined by voters like you. With all the amazing episodes of the show that exist, it's hard to trust just one person's opinion of what the top Castle episodes of all time are. Fans of Castle are very passionate about the show, and there are often debates over which episodes are the greatest. That's why this list exists- so you can vote for your favorites and we can find out once and for all what everyone thinks the best episode is.The list you're viewing is made up of a variety of different episodes, including "Hell Hath No Fury" and "One Man's Treasure." What is the best Castle episode of all time? Look below and find out.