For those that don't know Comcast/Xfinity is a cable service in the United States. And there is 'On Demand,' where you can choose programming they have selected so you can catch up with your favorite shows, see movies and exclusive content. Some you have to pay for, similar to Pay-Per-View and some are free. The following is free.
At this time of March 6, the latest episode they have is "Day Off," "Deal with Nighlok" and "The Rangers Unite." "Stick and Stones" and "A Fish Out of Water" are not yet available. I am to guess that next week "Stick and Stones" will be available.