Hothouse is an audio drama based on the long-running British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 science fiction television

Science fiction on television

Science fiction first appeared on a television program during the Golden Age of Science Fiction. Special effects and other production techniques allow creators to present a living visual image of an imaginary world not limited by the constraints of reality; this makes television an excellent medium...

 series Doctor Who

Doctor Who

Doctor Who is a British science fiction television programme produced by the BBC. The programme depicts the adventures of a time-travelling humanoid alien known as the Doctor who explores the universe in a sentient time machine called the TARDIS that flies through time and space, whose exterior...

. This audio drama was produced by Big Finish Productions

Big Finish Productions

Big Finish Productions is a British company that produces books and audio plays based, primarily, on cult British science fiction properties...

.

Plot

After being away for a lifetime, the Doctor finally returns to Earth. What he finds is a world on the brink of ecological collapse

Ecological collapse

Ecological Collapse refers to a situation where an ecosystem suffers a drastic, if not permanent, reduction in carrying capacity for all organisms, often resulting in mass extinction...

. Alex Marlowe, former rock musician turned wealthy eco-warrior

Eco-warrior

The term eco-warrior is a self-description for an environmental activist that adopts a 'hands-on' effort to save or salvage a plot of land, or to advance some ecological ideology...

, thinks nature should fight back. And he knows just the plant to do it.

Cast

• The Doctor
  Doctor (Doctor Who)
  The Doctor is the central character in the long-running BBC television science-fiction series Doctor Who, and has also featured in two cinema feature films, a vast range of spin-off novels, audio dramas and comic strips connected to the series....
  
   — Paul McGann
  Paul McGann
  Paul McGann is an English actor who made his name on the BBC serial The Monocled Mutineer, in which he played the lead role...
  
  
• Lucie Miller
  Lucie Miller
  Lucie Miller is a character in a series of audio plays produced by Big Finish Productions for BBC7 based on the long-running British science fiction television series Doctor Who...
  
   — Sheridan Smith
  Sheridan Smith
  Sheridan Smith is an English actress and singer who is best known for her contributions to the British sitcoms Two Pints of Lager and a Packet of Crisps, Gavin & Stacey and Benidorm. She has also become a recognised face in West End theatre, where she has appeared in Little Shop of Horrors,...
  
  
• Alex Marlowe — Nigel Planer
  Nigel Planer
  Nigel George Planer is an English actor, comedian, novelist and playwright.Planer is perhaps best known for his role as Neil Pye in the cult BBC comedy The Young Ones. He has appeared in many West End musicals, including Evita, Chicago, We Will Rock You, Wicked and Hairspray...
  
  
• Hazel Bright — Lysette Anthony
  Lysette Anthony
  Lysette Anthony is an English film, television, and theatre actress.-Early life:Anthony was born Lysette Chodzko in Fulham, London, the only daughter of actors Michael Anthony, and Bernadette Milnes....
  
  
• Christina Ondrak — Adna Sablyich
• Stefan Radek — Stuart Crossman
• Newsreader — Barnaby Edwards
  Barnaby Edwards
  Barnaby Edwards is a British actor, writer, director and artist. He is best known for his work on the popular British science-fiction series Doctor Who. His various roles include being a Dalek operator for the revived series in many Dalek stories...
  
  

Production and casting

• Lysette Anthony previously appeared in Assassin in the Limelight
  Assassin in the Limelight
  Assassin in the Limelight is a Big Finish Productions audio drama based on the long-running British science fiction television series Doctor Who.-Plot:Ford's Theatre, April 14, 1865...
  
  .

Continuity

• The Krynoids were defeated by the Fourth Doctor
  Fourth Doctor
  The Fourth Doctor is the fourth incarnation of the protagonist of the long-running BBC British television science-fiction series Doctor Who....
  
   and Sarah Jane Smith
  Sarah Jane Smith
  Sarah Jane Smith is a fictional character played by Elisabeth Sladen in the long-running British BBC Television science-fiction series Doctor Who and its spin-offs K-9 and Company and The Sarah Jane Adventures....
  
   in The Seeds of Doom
  The Seeds of Doom
  The Seeds of Doom is a serial in the British science fiction television series Doctor Who, which was first broadcast in six weekly parts from 31 January to 6 March 1976...
  
  . Many elements from that story are used here.

• UNIT's
  UNIT
  UNIT is a fictional military organisation from the British science fiction television series Doctor Who, Torchwood and The Sarah Jane Adventures...
  
   special "telephone" line to the Doctor was used in Terror of the Zygons
  Terror of the Zygons
  Terror of the Zygons is a serial in the British science fiction television series Doctor Who, which was first broadcast in four weekly parts from 30 August to 20 September 1975...
  
  .