System Shock is an original novel written by Justin Richards

Justin Richards

Justin Richards is a British writer. He has written science fiction and fantasy novels, including series set in Victorian or early-20th-century London, and also adventure stories set in the present day...

 and 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...

. It features 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....

, Sarah

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....

 and Harry

Harry Sullivan

Harry Sullivan is a fictional character from the British science-fiction television series Doctor Who and is a companion of the Fourth Doctor...

 and is followed by the BBC Books

BBC Books

BBC Books is an imprint majority owned and managed by Random House. The minority shareholder is BBC Worldwide, the commercial subsidiary of the British Broadcasting Corporation...

 Past Doctor Adventures

Past Doctor Adventures

The Past Doctor Adventures were a series of spin-off novels based on the long running BBC science fiction television series Doctor Who and published under the BBC Books imprint. For most of their existence, they were published side-by-side with the Eighth Doctor Adventures...

 novel Millennium Shock

Millennium Shock

Millennium Shock is a BBC Books original novel written by Justin Richards and based on the long-running British science fiction television series Doctor Who. It features the Fourth Doctor and Harry, and is a sequel to Richards' Virgin Missing Adventures novel System Shock....

, also by Richards.

Synopsis

It is 1998 and the information age is just about to take off. However, mysterious events are plaguing London. A prominent spy is killed. A hostage situation bizarrely resolved. The Doctor receives a computer disc from a man who is supposed to be dead. It seems that an alien race is planning a takeover using Earth's ever expanding computer technology.