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| Author | Gary Russell |
|---|---|
| Series | Doctor Who book: Eighth Doctor Adventures |
Release number | 13 |
| Subject | Featuring: Eighth Doctor Sam, Stacy, Ssard |
| Publisher | BBC Books |
Publication date | July 1998 |
| ISBN | 0-563-40587-2 |
| Preceded by | Seeing I |
| Followed by | Vanderdeken's Children |
Placebo Effect is an original novel written by Gary Russell and based on the long-running British science fiction television series Doctor Who. It features the Eighth Doctor and Sam and includes brief appearances by the characters of Stacy and Ssard, created by Russell for the Radio Times Doctor Who comic strip.
The novel features brief appearances by both the Foamasi, originally featured in The Leisure Hive, and the Wirrn, originally featured in The Ark in Space.