Human Nature (Doctor Who)

[1] In the episode, the alien time traveller the Tenth Doctor (David Tennant) hides from his pursuers, the Family of Blood, in a public school in 1913.

He transforms himself into a human and implants the false persona of a schoolteacher called "John Smith" to avoid detection until the Family's life runs out.

The Doctor turns himself into a human and transfers his Time Lord essence and memories into a fob watch that he asks Martha to guard.

Timothy Latimer, a young student at the school with extrasensory perception, discovers the fob watch and bonds with it, seeing visions of the Doctor.

Although most praise for the script was directed at Cornell, a great deal of the episode had in fact been rewritten by executive producer Russell T Davies.

The physical prop of John Smith's journal notebook was created by artist Kellyanne Walker, and incorporates text provided by writer Paul Cornell.

[7] The Doctor's list of 23 directives, much of which is sped through in the episode, is presented at normal speed in a deleted scene released on the BBC DVD.

In place of the nonexistent unheard requests, David Tennant breaks the fourth wall to speak about a love for The Housemartins and also talk nonsense to pad out the time[tone] before returning to character for the 23rd and final directive.

[1] David Tennant won the Constellation Award for Best Male Performance in a 2007 Science Fiction Television Episode for the two-part story.

Wright singles out the performances of Agyeman and Tennant for considerable praise and he concludes by describing the episode as "BAFTA worthy Drama".