"Tooth and Claw" is the second episode in the second series of the British science fiction television series Doctor Who and was first broadcast on 22 April 2006. In 1879 Scotland, the Doctor and Rose meet Queen Victoria. However, a group of warrior monks have sinister plans for the monarch, and the full moon is about to summon a creature out of legend.

The Doctor attempts to take Rose to Sheffield in 1979 to see Ian Dury in concert, but ends up in the Scottish moors in 1879. They encounter a carriage carrying Queen Victoria, who has been forced to travel by roads to Balmoral Castle as a fallen tree has blocked the train line to Aberdeen, feared to be a potential assassination attempt. The Doctor poses as Dr. James McCrimmon using his psychic paper, and the Queen invites him and Rose to join her as she travels to the Torchwood Estate, a favourite of her late consort Prince Albert, to spend the night. The royal party is unaware that the Torchwood Estate has been captured by a group of monks from a monastery in St. Catherine's Glen led by Father Angelo, forcing its owner, Sir Robert MacLeish, to play into their ruse as they take the place of the house's servants and guards. The monks, having arranged for the fallen tree to force the Queen to the estate, have brought a man infected with a form of lycanthropy, hoping to pass its nature to the Queen and create a new "Empire of the Wolf".

The Doctor soon realizes the trap they have fallen into, and helps to save Rose, the Queen, and Sir Robert from Father Angelo's men and the werewolf by taking shelter in the estate's library, its wood coated with oil of mistletoe wood to stave off the beast. They study the library and discover evidence collected by Sir Robert's father, a polymath, and Prince Albert which indicates the werewolf is really the current form of an alien species that fell to earth in 1540 near the monastery, surviving by passing its lycanthropic form from human to human. The Doctor also realizes that the estate was designed as a trap for the werewolf, as by use of its strange telescope along with the Queen's Koh-i-Noor diamond, its cut fashioned by Prince Albert, they can force the werewolf to revert to human form and destroy the alien lifeform.

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