About this programme
6/13. The Doctor takes Martha back to present-day Earth, where she finds her sister working for an elderly scientist who has built a machine to reverse the ageing process. When he tests it on himself, his youth is restored, but the experiment goes wrong and he transforms into a ravenous monster that must feed on humans to survive. Guest starring Mark Gatiss and Thelma Barlow.
Cast and crew
Cast
- The Doctor
- David Tennant
- Martha Jones
- Freema Agyeman
- Tish Jones
- Gugu Mbatha-Raw
- Leo Jones
- Reggie Yates
- Francine Jones
- Adjoa Andoh
- Lazarus
- Mark Gatiss
- Lady Thaw
- Thelma Barlow
- Party guest
- Lucy O'Connell
- Mysterious man
- Bertie Carvel
Crew
- Director
- Richard Clark
- Producer
- Phil Collinson
- Writer
- Stephen Greenhorn
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