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| Author | Mark Michalowski |
|---|---|
| Series | Doctor Who book: Eighth Doctor Adventures |
Release number | 68 |
| Subject | Featuring: Eighth Doctor Fitz, Trix |
| Publisher | BBC Books |
Publication date | April 2004 |
| Pages | 288 |
| ISBN | 0-563-48613-9 |
| Preceded by | Sometime Never... |
| Followed by | The Tomorrow Windows |
Halflife is a BBC Books original novel written by Mark Michalowski and based on the long-running British science fiction television series Doctor Who. It features the Eighth Doctor, Fitz and Trix.