"45 minutes of wandering aimlessly about". Patrick Mulkern gave the episode three stars in Radio Times. He called it a "delightful fable for kids and indulgent grown-ups", but found the premise was "almost as credulity-stretching" as the Moon being an egg in the same series. Neela Debnath of The Independent said that it was not "the strongest instalment", but the "witty dialogue and young guest cast make up for it". She felt that it was "a novel concept that starts off well but unravels fairly quickly", whereas Jamie McLoughlin of Liverpool Echo gave an overwhelmingly positive review, giving it five stars, calling it a "masterclass". However, Morgan Jeffery of Digital Spy gave a negative review, granting it two stars out of five. He called the script "unsophisticated" and "an utterly disappointing experience". However, he gave a positive review of Capaldi, Jenna Coleman and Samuel Anderson's performances. Matt Risley of IGN gave a rating of 7.4 out of 10. He felt it worked far better than the previous light-hearted episode of the series, "Robot of Sherwood", and that it was a refreshing change from the dark undertones of the series, but felt that Anderson was underused and criticised the disparate narratives. Showrunner Steven Moffat defended the episode, saying it was "beautifully and elegantly written," and added, "I think will grow in stature over the years." References External links Twelfth Doctor episodes 2014 British television episodes Doctor Who stories set on Earth Forests in fiction Works by Frank Cottrell-Boyce Television episodes set in London