Bigwig's infiltration and subsequent escape is rather disappointing in comparison to the book but Efrafa is quite different as well. Like Myrkin mentioned, it feels more abandoned than anything else. There are more guards than other rabbits!
It is kind of weird how when they are escaping through the tunnel and Vervain drops in it, that Bigwig turns back. He could have easily knocked Vervain unconscious then and there!
It also takes from his character I feel that Blackavar is just a loudmouth and not a suffering rabbit Bigwig takes pity on. We seem him standing up for some other poor rabbits but he doesn't bother taking them along. They're not given a second thought!
I love Kehaar in this exchange:

"How is your precision flying?"

"Better than yours, that's for sure."
He says there was something between Hazel and Primrose. He is proven right by those two stopping in the middle of escape to stare at each other lovingly for a few long seconds (it's not like they are in a hurry!).
Gotta get those longing looks and paw touches in!

Another thought about this episode: it could as well be called "Vervain is proven right about everything in the end".
Isn't that basically the entire series?

Culminating in that one line in Season 3 where you can just hear his disbelief and frustration in his voice.

So,
One almost has to feel sorry for poor Vervain. :P
Yes, yes, indeed! This is actually the episode that made me first appreciate Vervain.
