Tooth and Claw (Doctor Who)

This episode also establishes the origins of the Torchwood Institute, which was founded as a secret organisation in 1879 by Queen Victoria to investigate and fight extra-torrestrial threats, including the Doctor, within Britain after her encounter with the Werewolf.

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, which is feared to be a potential assassination attempt.

The royal party is unaware that the Torchwood Estate has been captured by a group of monks 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.

They study the library and discover evidence collected by Sir Robert's father, a polymath, and Prince Albert which indicates the werewolf is an alien being that fell to Earth and inhabited multiple generations of hosts.

The Doctor also realises 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 destroy the alien lifeform.

Michelle Duncan and Jamie Sives were unable to attend the readthrough for this story, and their parts were read by Tennant's parents, who happened to be visiting the Doctor Who set.

[6] Interviewed in Doctor Who Confidential, director Euros Lyn said that various martial arts films were viewed in researching the opening fight sequence, including Crouching Tiger, Hidden Dragon.

Pauline Collins stated in a BBC press release that there were two performance artists who demonstrated the movements that the werewolf would do and talked about the problems of overacting in a situation where one was simply reacting to a green screen.

[11] This episode was released on 5 June 2006 as a basic DVD with no special features, together with "School Reunion" and "The Girl in the Fireplace", and as part of a second series boxset on 20 November 2006.

This release included an audio commentary by writer Russell T Davies, visual effects supervisor David Houghton and supervising art director Stephen Nicholas.