Another episode, another new villain. Pulling on the ever-familiar villain-of-the-week formula that has served many a TV show well over the decades, Flash of Two Worlds saw us introduced to Eddie Slick, aka Sand Demon, a rogue more often associated with Firestorm in the comic book realm. Yet again this was another villain brought over from an alternative world by Zoom, with his mission to use his sand-manipulating powers to kill off Barry Allen.