Maybe a smidgeon better than the first "Nothing" but only because there is a bit more action and less of the dark, dreary storyline.
The opening teaser is strangely dull and undramatic. Gee, a ship out at sea with a a heavily-secured laboratory. Yippee... Ever notice how many episodes feature boats? Usually the duller ones. There are an awful lot of hospital settings too, not even counting the obligatory Scully autopsies.
Anyway, Xena gets more screen time and she even speaks some lines. I'm not sure whether she is a good witch or a bad one and I suspect the writers have no idea either. The whole chloramine thing seems a bit half-baked and the fake conflict between Doggett and Kersh is just tiresome.