Continuity mistake: After the Doctor and Bill are tied up in the tent of explosives, when Lord Sutcliffe pulls out his pocket watch to check the time and notes that the elephant is being brought onto the ice, in a shot facing the Doctor and Bill the watch chain is taut. When the shot cuts to look at Sutcliffe and his henchman, the chain is slack. (00:33:40)
Doctor Who (2005)
1 mistake in Thin Ice
Doctor: So, that's the trap. Or the test or the final judgment, I don't know. But if I kill you, I kill her. Except that implies, in this big grand scheme of Gods and Devils, that she's just a victim. But I've seen a lot of this universe. I've seen fake gods and bad gods and demi-gods and would-be gods - out of all that - out of that whole pantheon - if I believe in one thing... Just one thing... I believe in her.
Rise of the Cybermen (1) - S2-E8
Trivia: Only eleven Cybermen costumes were built, but careful filming made it look as if there were more.
More questions & answers from Doctor Who
Chosen answer: No, no information is avalible for the identity of the entity.
Repo_Man
Season 2: The Well.
jakew25