Any

Frustrating episode in general. Bloody Clara back just ruined it for me. Ruined its for me for the extent of why return to Gallifrey...what was the point? The story told was a stupid waist of bloody having the Doctor return to Gallifrey. Too many tacky & we guessed/already knew this stuff. Imagine Face the Raven was season finale & therefore Heaven Sent was the Christmas episode - they could have started the next season on Gallifrey. Although I'd hate the long wait, it would have been better than what we got. There is a lot more I could say but it would just frustrate me more 'Damn you Steven Moffat!' haha.