Sherlock impressions

After watching the final Series 3 episode without captions, and then again with captions, there were still a few things I didn't quite catch or understand. The dialogue and storyline go so fast in this series that there's no time to stop and ponder for a moment over anything one hears or sees, or else one ends up missing other parts of the story. That is, unless one watches it in a format* where one can pause, reverse**, and replay it.

However, the captions did allow me to catch several things that I missed the first time.

( Here Be Spoilers... )

* format? venue? what's the word?

**I was going to write "rewind", but that word no longer seems accurate. Is there a better word than reverse?