Mummy on the Orient Express - S8-E8
Continuity mistake: When Perkins leaves the TARDIS, Clara's hair clip is on the left side of her hair, but in her close-up (00:43:25) when Clara asks the Doctor, "Do you love it," the clip has switched to the right side of her hair, because it's a flipped shot. Then the clip changes back to her left side. (00:43:25)
Mummy on the Orient Express - S8-E8
Continuity mistake: When Clara tells Maisie that "Difficult people can make you feel all sorts of things", as she finishes the sentence the view cuts from a close-up of her to a wide shot, and the light and shadows cast onto her face change with it. (00:17:20)
Mummy on the Orient Express - S8-E8
Continuity mistake: When the Doctor offers Professor Moorhouse some jelly babies in a cigarette case, the position of the candy in the case changes between shots. (00:14:10)
Mummy on the Orient Express - S8-E8
Continuity mistake: When the Doctor takes a phone handset from the wall and sonics it before calling Clara, his grip on the sonic screwdriver changes between the wide shot and the close-up. (00:21:45)
Mummy on the Orient Express - S8-E8
Continuity mistake: When the Doctor phones Clara and discovers she's trapped in the locked car with Maisie, his phone keeps switching hands. (00:21:55)





Chosen answer: No, no information is avalible for the identity of the entity.
Repo_Man
Season 2: The Well.
jakew25