"Mummy on the Orient Express" is the eighth episode of the eighth series of the British science fiction television programme Doctor Who. It was first broadcast on BBC One on 11 October 2014. The episode was written by Jamie Mathieson, and directed by Paul Wilmshurst. In the episode, the alien time traveller the Doctor (Peter Capaldi) investigates the deaths of passengers on board a space-bound train, who claim to have seen a mummy that is not visible to others prior to their deaths. The episode received positive reviews from television critics.