This is one of those things. At this point, everything that Sean is saying is suspect. We really just have to wait and see right now. He is the only one not in a lot of end of the season scenes, so unless no one of consequence dies, which is completely possible, then it is most likely Robin.
Some of these scenes that Sean did not appear in doesn’t make it the end of the season scenes. You forget? The filming scenes for the last few episodes were out of order.
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