Hell Bent is the twelfth and final episode of the ninth series of the
British science fiction television series Doctor Who. It was first
broadcast on BBC One on 5 December 2015.In the episode, the alien time
traveller the Twelfth Doctor (Peter Capaldi) arrives on the planet
Gallifrey after escaping imprisonment by his people, the Time Lords,
and takes over as the new President. He tries in vain to use knowledge
of "the Hybrid", which is prophesied by the Time Lords to stand in
Gallifrey's ruins and unravel the Web of Time, to save the life of his
companion Clara (Jenna Coleman). Doing so causes the Doctor and Clara
themselves to become the Hybrid.On Gallifrey, the Twelfth Doctor has
escaped from his confession dial[N 1] after four and a half billion
years of imprisonment, alerting the Time Lords. Aided by the
Gallifreyan military, the Doctor usurps and exiles Lord President
Rassilon. Now the new President, the Doctor learns that Rassilon
imprisoned him in the dial to force him to confess about the Hybrid,
which is prophesied by the Time Lords to stand in Gallifrey's ruins
and unravel the Web of Time.The Doctor has the Time Lords retrieve
Clara from her timeline the instant before her death,[N 2] with her
biological processes suspended in a time loop, leaving her without a
pulse, ostensibly so the Doctor can consult her about the Hybrid. The
Doctor flees with Clara and steals a TARDIS from the workshops under
the Capitol, telling her he held out confessing to have something to
bargain for her life with. Hell Bent (Doctor Who) Biography, NetWorth, Height, Age, Weight, Family, Married, Son, Daughter