Doctor Who Season 3, Episode 8 : Human Nature

About Doctor Who Season 3, Episode 8 : Human Nature

To evade alien mercenaries seeking his regenerative ability, the Doctor transforms himself into a human being with no memory of being a Time Lord, then hides as a schoolteacher in the early 20th century while Martha stays nearby as a maid to monitor him. But the mercenaries arrive, while a schoolboy gets hold of the watch containing the Doctor's "essence." Guest Stars: Jessica Hynes, Thomas Brodie-Sangster, Rebekah Staton, Harry Lloyd, Tom Palmer, Gerard Horan, Lauren Wilson, Pip Torrens, Matthew White, Derek Smith, Peter Bourke,