'Mr.Lennon...' [does it count as spoilers if you know the outcome?]

That line in the end just makes me shiver. I'm shivering now thinking about it. It's such a creepy ending - esp. because it is 100% honest... although I doubt there was a pause that long from Mark pointing the gun at John... someone would have noticed it soon enough if it was the case. But my god, scary ending.

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