Actually, there's the short intro to one of the episodes quite a bit before the event, isn't there? You're right. It might make the unsuspecting viewer blink a bit. You can't get unspoiled to that actual episode, you're right.

(I only asked, because belantana asked me, at least semi-seriously to warn her about things in TWW... I don't always go round offering spoilers. I hope... But she is only on S3 so far, so - no need to spoiler anyone just yet.)