<span style=”color: #707986;”>Hi All…my first ever comment on here..my theory goes..well some bits…reading reports from the actor who plays Danny,he has said that he hopes that his character returns,you can surmise from this that his story “is told” in episodes 11 and 12,therefore i believe that he is from UNIT,being a soldier and that he kills Clara,hence his tears in the episode when mentioning that he killed someone,someone he loves.He has gone back to meet Clara before he kills her to find out about her.Also think the master is somewhere here as the (Missy,Master) connection seems too big to avoid.Perhaps the cyber men are just being used as well.</span>