Doctor Who: 10 Worst Things The Twelfth Doctor Ever Did

10. Using Maisie As Bait In Mummy On The Orient Express

Given the situations the Doctor often gets tangled up in they often have to make tough calls in order to save as many people as possible. However, in Mummy On The Orient Express the Doctor's pragmatism seems particularly cruel.

The titular Mummy only appears to those it's about to kill, therefore the Doctor has limited information to work with and uses the people about to die as opportunities to learn as much as he can. Enter Maisie, who's an emotionally vulnerable passenger on the train - and the Mummy's next target.

The Doctor convinces Clara to lie to Maisie and tell her he's has found a way to save her. Fortunately the Doctor does manage to stop her from dying, saying he only lied because he couldn't risk letting the AI running the train in on his plan.

Later on, though, the Doctor confesses that he wasn't sure he could save her, meaning that he was willing to use Maisie as bait if he needed too. While the Doctor was in a tough spot with no ideal options, he did gamble with the life of someone who was in distress for his benefit.