nyssas been having bad dreams of traken, which is understandable given the circumstances, however when she finds a jewel in a box she starts having someone elses dreams. its trippy and weird but its nice to see some familiar old faces and establishes a cute little bit of lore.

I might sound a bit harsh, but I sometimes feel that writers use other incarnations of The Doctor to prop up stories that don't quite have enough points of interest. This is not a terrible story by any means, it is nice psychedelic, but it is a bit of an exercise in showing the audience things that they recognise in fan-service, over delivering a top notch plot.