I love tension and being shocked, basically not knowing where a story will go. So just going by recent memory Better Call Saul had a few episodes that provide that for me.

Season 6 Ep.7 Plan and Execution: The build up to that scene, and of course that scene happenng.

Season 6. Ep. 8 Point and Shoot: That whole episode had me on pins and needles.

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And I just remembered Severance, I think I stopped breathing for like the last 15 mins of the season finale, that shit was intense.