I think this story will be quite good.

Is it just me or does the alien in the preview have a classic Doctor Who feel to it?

I guess it does - the alien (presumably the Kudlak of the title) looks a little dodgy to me... rather reminiscent of a power-rangers style baddie. Still, I enjoyed the Slitheen eps and was very impressed with the Gorgon two. I shall watch and doubtless enjoy...