Satan Helps Elucidate Skywalker's Rescue Plot

To cut a long story short, I was recently on a long-haul flight and ended up watching The Empire Strike Back and part of Return of the Jedi on the in-flight entertainment screen. I haven't watched a Star Wars film since The Force Awakens came out at the cinema and I don't believe I had seen any for some time before that either. But there was nothing else on that I wanted to watch (apart from the…