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Instruments of Darkness
AuthorGary Russell
SeriesDoctor Who book:
Past Doctor Adventures
Release number
48
SubjectFeaturing:
Sixth Doctor
Mel and Evelyn Smythe.
Set inPeriod between
The Trial of a Time Lord and Time and the Rani
PublisherBBC Books
Publication date
November 2001
Pages287
ISBN0-563-53828-7
Preceded byDying in the Sun 
Followed byRelative Dementias 

Instruments of Darkness is a BBC Books original novel written by Gary Russell and based on the long-running British science fiction television series Doctor Who. It features the Sixth Doctor and Mel.

This novel concludes a trilogy concerning the Pale Man and the Irish Twins which began in Russell's The Scales of Injustice and Business Unusual. Evelyn Smythe, the Sixth Doctor's companion from the Big Finish Productions audio plays, also appears.