List of the best Casualty episodes, as determined by voters like you. Casualty is the longest-running medical drama series in the world, and runs every week on BBC One. With all the amazing episodes of the show that exist, it's hard to trust just one person's opinion of what the top Casualty episodes of all time are. Fans of Casualty 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. List episodes range from The Devil You Know to Accidents Happen. What is the best Casualty episode of all time? Look below and find out.