Engines of War is a BBC Books original novel written by George Mann and based on the long-running British science fiction television series Doctor Who.

The fleet is destroyed and the TARDIS crashes to the planet below, where the Doctor meets human resistance fighter Cinder, a young woman whose family were killed by the Daleks when she was a child.

Travelling to Gallifrey to warn the Time Lords, he finds them preparing to counter-attack using a weapon that will cause the death of billions, Dalek and non-Dalek alike.

Vowing to stop both the Time Lords and the Daleks, the Doctor must avoid being killed by a Time Lord assassin and confront the Eternity Circle as he seeks to bring the war to an end and prevent his people from becoming as evil as the Daleks themselves.

An unabridged audiobook version of Engines of War, read by Nicholas Briggs, was released on 18 December 2014.