"Mummy on the Orient Express" is the eighth episode of the eighth series of the British science fiction television programme Doctor Who, written by Jamie Mathieson, and directed by Paul Wilmshurst. The episode stars Peter Capaldi and Jenna Coleman, with Frank Skinner guest starring.

In the weeks following the events of "Kill the Moon", Clara has come to realise she does not hate the Doctor for taking her into dangerous situations, though her boyfriend Danny Pink urges her to stop traveling with him. Clara allows the Doctor to take her on one "last hurrah". They arrive via TARDIS in the future aboard a space-bound train that has been modeled after the Orient Express, with many of its passengers in period outfits.

They learn of the death of the elderly Mrs. Pitt, who died after claiming to have witnessed a mummy attack her. The Doctor, posing as a mystery shopper, talks to Perkins, the train's engineer, who is also curious to her death and is suspicious of the train and its automated computer system, Gus, and provides the Doctor with various manifests to study. Meanwhile, Clara speaks to Maisie, Mrs. Pitt's granddaughter who is traumatised by her death, and has been trying to see her body. In their search, they become trapped in the storage car, where a sarcophagus sits, and the two bond as they wait for rescue. A chef on the train dies from a heart attack after claiming to have seen a mummy. The Doctor reviews video footage and finds that both deaths occurred exactly 66 seconds after lights flickered nearby; this follows from a myth that Prof. Moorhouse reiterates about the legend of a supernatural being called the Foretold. Clara is able to make contact with the Doctor, but when he goes to rescue her, the lights nearby flicker, and the sarcophagus begins to open. Fearing that Clara is the next victim, he tries to unseal the storage door but is stopped by Captain Quell, who has determined his credentials are fake and charges him with the murders. However, when one of Quell's men dies after 66 seconds, Quell realises the Doctor is innocent and lets him go.

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