5G

What did you think Pollux intended to do with that metre long length of thin rope that he had the knight bring him? Why?

He was going to use it as a weapon. (Garroted)

I was pretty sure he was going to use it to kill his brother and then take his place.

Same. He was going to kill his brother

It was clear he was about to kill his brother.

It was pretty obvious what he intended to do with the rope, and this wasn’t a spur of the moment thing.

That was my "oh my!" moment and made the plot suddenly become clearer.