| System Shock | |
| Author: | Justin Richards |
| Series: | Doctor Who book: Virgin Missing Adventures |
| Release Number: | 11 |
| Subject: | Featuring: Fourth Doctor Sarah, Harry |
| Set In: | Period between The Seeds of Doom and The Masque of Mandragora |
| Release Date: | June 1995 |
| Publisher: | Virgin Books |
| Pages: | 309 |
| Isbn: | 0-426-20445-X |
| Preceded By: | The Menagerie |
| Followed By: | The Sorcerer's Apprentice |
System Shock is an original novel written by Justin Richards and based on the long-running British science fiction television series Doctor Who. It features the Fourth Doctor, Sarah and Harry and is followed by the BBC Books Past Doctor Adventures novel Millennium Shock, also by Richards.
It is 1998, and the information age is about to take off. However, mysterious events are plaguing London. A prominent spy is killed. A hostage situation is bizarrely resolved. The Doctor receives a computer disc from a dead man. And to top it all off, it seems that an alien race is planning a takeover using Earth's ever expanding computer technology.