This episode with the story was prime Doctor Who, but the musical number at the end was unnecessary and killed the episode.
Jinx Monsoon character in this episode was stellar. I hope to see them in more roles in other things TV and movies in the future.
Good story, good SFX ... but if you're a fan of Azimov and his works, and you've waited as long as I have for an adaption, this will just feel wrong to you.
I will continue to watch, but I can't help feeling it would be more satisfying ( and I would rate it higher ) if I didn't have a knowledge and love of the source material.