Deep Blue (novel)

Deep Blue
Author Mark Morris
Series Doctor Who book:
Past Doctor Adventures
Release number
20
Subject Featuring:
Fifth Doctor
Tegan, Turlough, Mike Yates and UNIT
Set in Period between
Warriors of the Deep and The Awakening
(for the TARDIS crew)
and between
The Green Death and The Time Warrior (for the members of UNIT)
Publisher BBC Books
Publication date
1 March 1999
Pages 249
ISBN 0-563-55571-8
Preceded by The Wages of Sin 
Followed by Players 

Deep Blue is a BBC Books original novel written by Mark Morris and based on the long-running British science fiction television series Doctor Who. It features the Fifth Doctor, Tegan, Turlough, and members of UNIT, mostly embodied by Captain Mike Yates.