I was not expecting the sheer amount of twists in this story, that ending and Trevor's whole story was actually so sad, my only real issue was the Doctor taking so long to realise that Lucie was a Zygon when she was acting so strange the whole time, especially the weirdly prejudicial attitude she had towards the Zygons despite having no experience with them.

Great followup to the classic who Zygon serials. Was also quite sad, too.

3.5/5