While you can watch full seasons of many shows on Hulu, some series may only offer a few of the latest season’s episodes to air. This is known as “rolling” availability and is related to streaming rights. When a show's availability is "rolling", only a specific number of recently aired episodes will be available at once. For instance, if a show only offers five of the most recently aired episodes at a time, the fifth oldest episode will expire whenever a new (or sixth) episode airs and is added. The best way to keep up with rolling availability shows is by adding them to My Stuff. That way, you’ll be able to see when any new episodes are incoming and if any old episodes are expiring to make room.